feat(deposits): RBI premature closure compliance, simplified to always use the contracted rate

Adds a Closure Reason to premature FD closure (Normal, Premature Extension,
Conversion to Another TD, Deceased Settlement, Nominee/Legal-Heir), persisted
as an RBI audit trail on m_deposit_account_term_and_preclosure. RBI-mandated
reasons auto-waive the pre-closure penalty regardless of the maker's own
checkbox; the maker can also waive it explicitly for any other reason.

Interest rate for a premature closure is always the deposit's own contracted
rate -- the same one its regular scheduled postings use throughout its life
-- rather than a slab re-lookup against the actual period held. An earlier
"actual-period vs contracted" toggle was built, tested, then deliberately
removed per explicit request: simpler, and avoids disagreeing with interest
the account was already accruing all along.

Also fixes a real bug found while testing this: a renewed FD term's premature-
closure interest was including the previous term's closing transaction a
second time (it's dated the same day the new term starts), understating the
first day's balance by the whole prior term's payout. Scoped the interest
calculation to transactions strictly after the current term's start date.

Known open issue: a renewed/auto-renewed account can still show a materially
wrong (sometimes negative) premature-closure interest figure in some cases
(seen on account 10, a QUARTERLY-posting auto-renewed FD) -- root cause not
yet confirmed; needs further investigation with debug instrumentation before
this is considered fully correct for every renewal shape.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

fineract-core/src/main/java/org/apache/fineract/portfolio/savings/DepositsApiConstants.java

@@ -213,6 +213,14 @@ public final class DepositsApiConstants {
     public static final String transferDescriptionParamName = "transferDescription";
     public static final String toSavingsAccountIdParamName = "toSavingsAccountId";
     public static final String reinvestAmountParamName = "reinvestAmount";
+    // Lets a maker waive the product's configured pre-closure penalty for one premature closure --
+    // see FixedDepositAccount#waivePreClosurePenaltyForThisRequest for why this is a transient
+    // per-request flag rather than a stored account field.
+    public static final String waivePreClosurePenaltyParamName = "waivePreClosurePenalty";
+    // Why the deposit was closed before maturity -- see PrematureClosureReasonType. Persisted (unlike
+    // waivePreClosurePenaltyParamName above) as the RBI audit trail of which closures waived their
+    // penalty and why.
+    public static final String prematureClosureReasonIdParamName = "prematureClosureReasonId";
     public static final String savingsAccounts = "savingsAccounts";
     public static final String maturityInstructionIdParamName = "maturityInstructionId";
     public static final String transferToSavingsIdParamName = "transferToSavingsId";

fineract-core/src/main/java/org/apache/fineract/portfolio/savings/PrematureClosureReasonType.java

@@ -0,0 +1,70 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.fineract.portfolio.savings;
+
+import lombok.Getter;
+
+/**
+ * Why a Fixed/Recurring Deposit was closed before maturity -- captured on every premature closure, not
+ * just the ones that waive the penalty, so the audit trail always shows a reason rather than only
+ * recording one when it happens to matter. {@link #isAutoWaived()} is the RBI-driven business rule this
+ * type exists to encode: a maker cannot leave the platform's own penalty-waiver decision to memory or a
+ * free-text note for these four reasons -- picking the reason IS the waiver decision, enforced on the
+ * server regardless of what a client happened to also send for the plain waive-penalty flag.
+ */
+@Getter
+public enum PrematureClosureReasonType {
+
+    INVALID(0, "prematureClosureReasonType.invalid", false), //
+    NORMAL(100, "prematureClosureReasonType.normal", false), //
+    PREMATURE_EXTENSION(200, "prematureClosureReasonType.prematureExtension", true), //
+    CONVERSION_TO_ANOTHER_TD(300, "prematureClosureReasonType.conversionToAnotherTd", true), //
+    DECEASED_SETTLEMENT(400, "prematureClosureReasonType.deceasedSettlement", true), //
+    NOMINEE_LEGAL_HEIR_CLOSURE(500, "prematureClosureReasonType.nomineeLegalHeirClosure", true); //
+
+    private final Integer value;
+    private final String code;
+    /** True when this reason, by itself, waives the pre-closure penalty regardless of any manual
+     *  waive-penalty flag also sent -- see the class javadoc. */
+    private final boolean autoWaived;
+
+    PrematureClosureReasonType(final Integer value, final String code, final boolean autoWaived) {
+        this.value = value;
+        this.code = code;
+        this.autoWaived = autoWaived;
+    }
+
+    public static PrematureClosureReasonType fromInt(final Integer v) {
+        if (v == null) {
+            return INVALID;
+        }
+        return switch (v) {
+            case 100 -> NORMAL;
+            case 200 -> PREMATURE_EXTENSION;
+            case 300 -> CONVERSION_TO_ANOTHER_TD;
+            case 400 -> DECEASED_SETTLEMENT;
+            case 500 -> NOMINEE_LEGAL_HEIR_CLOSURE;
+            default -> INVALID;
+        };
+    }
+
+    public boolean isInvalid() {
+        return this.equals(INVALID);
+    }
+}

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/data/DepositAccountTransactionDataValidator.java

@@ -77,10 +77,12 @@ public class DepositAccountTransactionDataValidator {
             Arrays.asList(DepositsApiConstants.localeParamName, DepositsApiConstants.dateFormatParamName, closedOnDateParamName,
                     DepositsApiConstants.noteParamName, onAccountClosureIdParamName, paymentTypeIdParamName,
                     transactionAccountNumberParamName, checkNumberParamName, routingCodeParamName, receiptNumberParamName,
-                    bankNumberParamName, DepositsApiConstants.transferDescriptionParamName, toSavingsAccountIdParamName));
+                    bankNumberParamName, DepositsApiConstants.transferDescriptionParamName, toSavingsAccountIdParamName,
+                    DepositsApiConstants.waivePreClosurePenaltyParamName, DepositsApiConstants.prematureClosureReasonIdParamName));
 
-    private static final Set<String> DEPOSIT_ACCOUNT_PRE_MATURE_CALCULATION_REQUEST_DATA_PARAMETERS = new HashSet<>(
-            Arrays.asList(DepositsApiConstants.localeParamName, DepositsApiConstants.dateFormatParamName, closedOnDateParamName));
+    private static final Set<String> DEPOSIT_ACCOUNT_PRE_MATURE_CALCULATION_REQUEST_DATA_PARAMETERS = new HashSet<>(Arrays.asList(
+            DepositsApiConstants.localeParamName, DepositsApiConstants.dateFormatParamName, closedOnDateParamName,
+            DepositsApiConstants.waivePreClosurePenaltyParamName, DepositsApiConstants.prematureClosureReasonIdParamName));
 
     private static final Set<String> DEPOSIT_ACCOUNT_PAYMENT_REQUEST_DATA_PARAMETERS = new HashSet<>(
             Arrays.asList(DepositsApiConstants.localeParamName, DepositsApiConstants.dateFormatParamName, closedOnDateParamName,

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/DepositAccountDomainServiceJpa.java

@@ -19,9 +19,11 @@
 package org.apache.fineract.portfolio.savings.domain;
 
 import static org.apache.fineract.portfolio.savings.DepositsApiConstants.onAccountClosureIdParamName;
+import static org.apache.fineract.portfolio.savings.DepositsApiConstants.prematureClosureReasonIdParamName;
 import static org.apache.fineract.portfolio.savings.DepositsApiConstants.reinvestAmountParamName;
 import static org.apache.fineract.portfolio.savings.DepositsApiConstants.toSavingsAccountIdParamName;
 import static org.apache.fineract.portfolio.savings.DepositsApiConstants.transferDescriptionParamName;
+import static org.apache.fineract.portfolio.savings.DepositsApiConstants.waivePreClosurePenaltyParamName;
 
 import java.math.BigDecimal;
 import java.math.MathContext;
@@ -65,6 +67,7 @@ import org.apache.fineract.portfolio.paymentdetail.domain.PaymentDetail;
 import org.apache.fineract.portfolio.savings.DepositAccountOnClosureType;
 import org.apache.fineract.portfolio.savings.DepositAccountType;
 import org.apache.fineract.portfolio.savings.DepositsApiConstants;
+import org.apache.fineract.portfolio.savings.PrematureClosureReasonType;
 import org.apache.fineract.portfolio.savings.SavingsApiConstants;
 import org.apache.fineract.portfolio.savings.SavingsPeriodFrequencyType;
 import org.apache.fineract.portfolio.savings.SavingsTransactionBooleanValues;
@@ -812,6 +815,18 @@ public class DepositAccountDomainServiceJpa implements DepositAccountDomainServi
         final DateTimeFormatter fmt = DateTimeFormatter.ofPattern(command.dateFormat()).withLocale(locale);
         Long savingsTransactionId = null;
 
+        // Maker's own "waive penalty" choice on the Premature Close dialog, not the product's stored
+        // preClosurePenalApplicable config -- this is a one-time override for this closure only, read
+        // fresh here since the preview and the actual submit are two separate requests.
+        final boolean waivePreClosurePenalty = command.hasParameter(waivePreClosurePenaltyParamName)
+                && command.booleanPrimitiveValueOfParameterNamed(waivePreClosurePenaltyParamName);
+        // RBI-mandated waiver reasons waive the penalty regardless of the manual checkbox above -- see
+        // PrematureClosureReasonType. Enforced here (not just trusted from the client) so the actual
+        // closure always matches what the preview showed for the same reason.
+        final PrematureClosureReasonType prematureClosureReason = PrematureClosureReasonType
+                .fromInt(command.integerValueOfParameterNamed(prematureClosureReasonIdParamName));
+        account.setWaivePreClosurePenaltyForThisRequest(waivePreClosurePenalty || prematureClosureReason.isAutoWaived());
+
         // post interest
         account.postPreMaturityInterest(closedDate, isPreMatureClosure, isSavingsInterestPostingAtCurrentPeriodEnd,
                 financialYearBeginningMonth);

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/domain/FixedDepositAccount.java

@@ -58,7 +58,7 @@ import org.apache.fineract.portfolio.interestratechart.service.InterestRateChart
 import org.apache.fineract.portfolio.savings.DepositAccountOnClosureType;
 import org.apache.fineract.portfolio.savings.DepositAccountType;
 import org.apache.fineract.portfolio.savings.DepositsApiConstants;
-import org.apache.fineract.portfolio.savings.PreClosurePenalInterestOnType;
+import org.apache.fineract.portfolio.savings.PrematureClosureReasonType;
 import org.apache.fineract.portfolio.savings.SavingsApiConstants;
 import org.apache.fineract.portfolio.savings.SavingsCompoundingInterestPeriodType;
 import org.apache.fineract.portfolio.savings.SavingsInterestCalculationDaysInYearType;
@@ -84,6 +84,16 @@ public class FixedDepositAccount extends SavingsAccount {
     protected InterestRateChartAssembler chartAssembler;
     @Transient
     private ConfigurationDomainService configurationDomainService;
+    /**
+     * Set once per request, immediately before a premature-closure preview or the real closure, from the
+     * maker's own "waive penalty" checkbox on the Premature Close dialog -- never persisted, since it is
+     * a one-time decision for this specific closure rather than a product/account setting. The product's
+     * own {@code accountTermAndPreClosure.isPreClosurePenalApplicable()} configuration is untouched, so
+     * every other premature closure of this same product still applies its penalty as normal; this only
+     * suppresses it for the one request that explicitly asked to waive it.
+     */
+    @Transient
+    private boolean waivePreClosurePenaltyForThisRequest;
 
     protected FixedDepositAccount() {
         //
@@ -177,18 +187,17 @@ public class FixedDepositAccount extends SavingsAccount {
         if (this.chart != null) {
             boolean applyPreMaturePenalty = false;
             BigDecimal penalInterest = BigDecimal.ZERO;
-            LocalDate depositCloseDate = calculateMaturityDate();
+            // Rate-selection date is always calculateMaturityDate() below -- premature closure prices off
+            // the deposit's own CONTRACTED rate, the same rate the FD was created with and the same one
+            // every regular scheduled interest posting this account ever makes (see this method's 2-arg
+            // overload), so a closure's freshly-recomputed total always matches what the account was
+            // already accruing all along. No separate "actual period held" slab lookup -- deliberately
+            // simple, one rate for the account's whole life.
+            final LocalDate depositCloseDate = calculateMaturityDate();
             if (isPreMatureClosure) {
-                if (this.accountTermAndPreClosure.isPreClosurePenalApplicable()) {
+                if (this.accountTermAndPreClosure.isPreClosurePenalApplicable() && !this.waivePreClosurePenaltyForThisRequest) {
                     applyPreMaturePenalty = true;
                     penalInterest = this.accountTermAndPreClosure.depositPreClosureDetail().preClosurePenalInterest();
-                    final PreClosurePenalInterestOnType preClosurePenalInterestOnType = this.accountTermAndPreClosure
-                            .depositPreClosureDetail().preClosurePenalInterestOnType();
-                    if (preClosurePenalInterestOnType.isWholeTerm()) {
-                        depositCloseDate = interestCalculatedUpto();
-                    } else if (preClosurePenalInterestOnType.isTillPrematureWithdrawal()) {
-                        depositCloseDate = interestPostingUpToDate;
-                    }
                 }
             }
 
@@ -353,7 +362,7 @@ public class FixedDepositAccount extends SavingsAccount {
         boolean isInterestTransfer = false;
         final Money minBalanceForInterestCalculation = Money.of(getCurrency(), minBalanceForInterestCalculation());
         List<SavingsAccountTransactionDetailsForPostingPeriod> savingsAccountTransactionDetailsForPostingPeriodList = toSavingsAccountTransactionDetailsForPostingPeriodList(
-                transactions);
+                transactionsForCurrentTermInterestCalculation(transactions));
         for (final LocalDateInterval periodInterval : postingPeriodIntervals) {
             boolean isUserPosting = false;
             if (postedAsOnTransactionDates.contains(periodInterval.endDate())) {
@@ -439,7 +448,7 @@ public class FixedDepositAccount extends SavingsAccount {
             final boolean isInterestTransfer = false;
             final Money minBalanceForInterestCalculation = Money.of(getCurrency(), minBalanceForInterestCalculation());
             final List<SavingsAccountTransactionDetailsForPostingPeriod> savingsAccountTransactionDetailsForPostingPeriodList = toSavingsAccountTransactionDetailsForPostingPeriodList(
-                    transactions);
+                    transactionsForCurrentTermInterestCalculation(transactions));
 
             for (final LocalDateInterval periodInterval : postingPeriodIntervals) {
                 final boolean isUserPosting = postedAsOnTransactionDates.contains(periodInterval.endDate());
@@ -525,6 +534,12 @@ public class FixedDepositAccount extends SavingsAccount {
         final DepositAccountOnClosureType onClosureType = DepositAccountOnClosureType.fromInt(onAccountClosureId);
         this.accountTermAndPreClosure.updateOnAccountClosureStatus(onClosureType);
 
+        // RBI audit trail: record why, not just that, this closure happened -- see
+        // PrematureClosureReasonType. Absent entirely on a request from before this field existed,
+        // which resolves to INVALID/null here rather than a misleading "Normal".
+        final Integer prematureClosureReasonId = command.integerValueOfParameterNamed(DepositsApiConstants.prematureClosureReasonIdParamName);
+        this.accountTermAndPreClosure.updatePrematureClosureReason(PrematureClosureReasonType.fromInt(prematureClosureReasonId));
+
         /*
          * // withdraw deposit amount before closing the account final Money transactionAmountMoney =
          * Money.of(this.currency, this.getAccountBalance()); final SavingsAccountTransaction withdraw =
@@ -789,6 +804,13 @@ public class FixedDepositAccount extends SavingsAccount {
 
     }
 
+    /** See {@link #waivePreClosurePenaltyForThisRequest}. Call before {@link #calculatePreMatureAmount} (preview)
+     *  or {@link #postPreMaturityInterest} (the real closure) -- both read the flag at the same point in the
+     *  same interest calculation this waives a part of. */
+    public void setWaivePreClosurePenaltyForThisRequest(final boolean waive) {
+        this.waivePreClosurePenaltyForThisRequest = waive;
+    }
+
     public BigDecimal calculatePreMatureAmount(final LocalDate preMatureDate, final boolean isPreMatureClosure,
             final boolean isSavingsInterestPostingAtCurrentPeriodEnd, final Integer financialYearBeginningMonth) {
 
@@ -909,10 +931,26 @@ public class FixedDepositAccount extends SavingsAccount {
         return this.product instanceof FixedDepositProduct ? ((FixedDepositProduct) this.product).getFdType() : null;
     }
 
+    /**
+     * Interest already posted for the term currently running, NOT the account's whole lifetime.
+     * <p>
+     * A renewed account keeps every prior term's transactions in {@code this.transactions} -- including
+     * whatever interest was posted (and already paid out, via the renewal's own withdrawal/transfer leg)
+     * for a term that has since closed. Summing all of them here double-counted that stale interest: a
+     * premature closure of the CURRENT term subtracted it from the maturity amount
+     * ({@code accountBalance - interestPostedToDate + interestEarnedTillDate}) even though it was never
+     * part of this term's balance to begin with, silently shortchanging the customer by exactly that
+     * amount -- enough to make a freshly-renewed FD's premature-closure amount come out BELOW its
+     * deposit amount, penalty or no penalty. Scoped to {@link #depositStartDate()} for the same reason
+     * {@link #isRenewedTerm()} and the posting-period calculation already are: interest posted before
+     * the term restarted belongs to a term that has already been settled.
+     */
     private Money totalInterestPosted() {
+        final LocalDate currentTermStartDate = depositStartDate();
         Money interestPostedToDate = Money.zero(this.currency);
         for (final SavingsAccountTransaction transaction : this.transactions) {
-            if (transaction.isInterestPostingAndNotReversed()) {
+            if (transaction.isInterestPostingAndNotReversed()
+                    && !DateUtils.isBefore(transaction.getTransactionDate(), currentTermStartDate)) {
                 interestPostedToDate = interestPostedToDate.plus(transaction.getAmount(currency));
             }
         }
@@ -960,6 +998,33 @@ public class FixedDepositAccount extends SavingsAccount {
         return termStart != null && getActivationDate() != null && !termStart.equals(getActivationDate());
     }
 
+    /**
+     * A renewed term's opening balance is seeded straight to the term's own principal (see
+     * calculateInterestPayable/projectInterestSchedule) -- which is already the balance AS OF
+     * depositStartDate(), i.e. net of whatever transaction closed out the previous term. That closing
+     * transaction is dated the SAME day the new term starts (a renewal is atomic: the old term is closed
+     * and the new one opened in the same stroke), so without this filter it still falls inside the new
+     * term's posting-period walk and gets applied a SECOND time on top of the already-net seed --
+     * understating the very first day's balance by the old term's entire payout, which silently corrupts
+     * that day's interest for as long as the term keeps re-including it (every premature-closure preview,
+     * and any later maturity recalculation). Scoping to transactions strictly after the term start avoids
+     * the double-count; a genuine new transaction can't land on the renewal day itself for an FD anyway.
+     */
+    private List<SavingsAccountTransaction> transactionsForCurrentTermInterestCalculation(
+            final List<SavingsAccountTransaction> transactions) {
+        if (!isRenewedTerm()) {
+            return transactions;
+        }
+        final LocalDate currentTermStartDate = depositStartDate();
+        final List<SavingsAccountTransaction> scoped = new ArrayList<>();
+        for (final SavingsAccountTransaction transaction : transactions) {
+            if (DateUtils.isAfter(transaction.getTransactionDate(), currentTermStartDate)) {
+                scoped.add(transaction);
+            }
+        }
+        return scoped;
+    }
+
     private LocalDate interestCalculatedUpto() {
         LocalDate uptoMaturityDate = calculateMaturityDate();
         if (uptoMaturityDate != null) {

fineract-provider/src/main/java/org/apache/fineract/portfolio/savings/service/DepositAccountPreMatureCalculationPlatformServiceImpl.java

@@ -19,8 +19,11 @@
 package org.apache.fineract.portfolio.savings.service;
 
 import static org.apache.fineract.portfolio.savings.DepositsApiConstants.closedOnDateParamName;
+import static org.apache.fineract.portfolio.savings.DepositsApiConstants.prematureClosureReasonIdParamName;
+import static org.apache.fineract.portfolio.savings.DepositsApiConstants.waivePreClosurePenaltyParamName;
 
 import com.google.gson.JsonElement;
+import java.math.BigDecimal;
 import java.time.LocalDate;
 import java.util.Collection;
 import lombok.RequiredArgsConstructor;
@@ -32,6 +35,7 @@ import org.apache.fineract.portfolio.paymenttype.data.PaymentTypeData;
 import org.apache.fineract.portfolio.paymenttype.service.PaymentTypeReadService;
 import org.apache.fineract.portfolio.savings.DepositAccountOnClosureType;
 import org.apache.fineract.portfolio.savings.DepositAccountType;
+import org.apache.fineract.portfolio.savings.PrematureClosureReasonType;
 import org.apache.fineract.portfolio.savings.data.DepositAccountData;
 import org.apache.fineract.portfolio.savings.data.DepositAccountTransactionDataValidator;
 import org.apache.fineract.portfolio.savings.data.FixedDepositAccountData;
@@ -77,13 +81,32 @@ public class DepositAccountPreMatureCalculationPlatformServiceImpl implements De
         // calculate interest before one day of closure date
         final LocalDate interestCalculatedToDate = preMaturityDate.minusDays(1);
         final boolean isPreMatureClosure = true;
+        // Preview-time only -- the real closure re-reads this same box from its own request when it
+        // actually happens (see DepositAccountDomainServiceJpa#handleFDAccountPreMatureClosure), so a
+        // maker previewing with the box checked and then submitting without it (or vice versa) gets
+        // exactly what they last confirmed, not what an earlier preview computed.
+        final boolean waivePreClosurePenalty = this.fromJsonHelper.parameterExists(waivePreClosurePenaltyParamName, element)
+                && this.fromJsonHelper.extractBooleanNamed(waivePreClosurePenaltyParamName, element);
+        // RBI-mandated waiver reasons (premature extension, conversion to another TD, deceased
+        // settlement, nominee/legal heir closure) waive the penalty regardless of the manual checkbox
+        // above -- see PrematureClosureReasonType. This is enforced here, not just on the client, so
+        // the preview a maker sees always matches what the actual closure will compute.
+        final Integer prematureClosureReasonId = this.fromJsonHelper.extractIntegerSansLocaleNamed(prematureClosureReasonIdParamName,
+                element);
+        final PrematureClosureReasonType prematureClosureReason = PrematureClosureReasonType.fromInt(prematureClosureReasonId);
+        final boolean effectiveWaivePenalty = waivePreClosurePenalty || prematureClosureReason.isAutoWaived();
 
         if (depositAccountType.isFixedDeposit()) {
             final FixedDepositAccount fd = (FixedDepositAccount) account;
-            accountData = FixedDepositAccountData.preClosureDetails(
-                    account.getId(), fd.calculatePreMatureAmount(interestCalculatedToDate, isPreMatureClosure,
-                            isSavingsInterestPostingAtCurrentPeriodEnd, financialYearBeginningMonth),
-                    onAccountClosureOptions, paymentTypeOptions, savingsAccountDatas);
+            fd.setWaivePreClosurePenaltyForThisRequest(effectiveWaivePenalty);
+            final BigDecimal maturityAmount = fd.calculatePreMatureAmount(interestCalculatedToDate, isPreMatureClosure,
+                    isSavingsInterestPostingAtCurrentPeriodEnd, financialYearBeginningMonth);
+            // calculatePreMatureAmount() (via getEffectiveInterestRateAsFraction()) leaves the account's
+            // own nominalAnnualInterestRate set to whichever rate it just resolved for THIS preview --
+            // the deposit's own contracted rate, minus any pre-closure penalty -- so read it back here
+            // rather than re-deriving it, to show the maker exactly what applied.
+            accountData = FixedDepositAccountData.preClosureDetails(account.getId(), maturityAmount, onAccountClosureOptions,
+                    paymentTypeOptions, savingsAccountDatas, fd.getNominalAnnualInterestRate());
         } else if (depositAccountType.isRecurringDeposit()) {
             final RecurringDepositAccount rd = (RecurringDepositAccount) account;
             accountData = RecurringDepositAccountData.preClosureDetails(

fineract-provider/src/main/resources/db/changelog/tenant/final-changelog-tenant.xml

@@ -156,4 +156,5 @@
     <include file="parts/0585_add_loan_cob_catchup_permission.xml" relativeToChangelogFile="true"/>
     <include file="parts/0586_add_system_module_checker_permissions.xml" relativeToChangelogFile="true"/>
     <include file="parts/0587_fix_current_product_od_scheme_pending_columns.xml" relativeToChangelogFile="true"/>
+    <include file="parts/0588_add_premature_closure_reason.xml" relativeToChangelogFile="true"/>
 </databaseChangeLog>

fineract-provider/src/main/resources/db/changelog/tenant/parts/0588_add_premature_closure_reason.xml

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements. See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership. The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License. You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied. See the License for the
+    specific language governing permissions and limitations
+    under the License.
+
+-->
+<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                   xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-4.1.xsd">
+
+    <!-- RBI audit gap: a premature FD/RD closure could waive its penalty (a manual maker checkbox),
+         but nothing recorded WHY, and reasons that must always waive the penalty by policy (premature
+         extension, conversion to another term deposit, deceased settlement, nominee/legal heir
+         closure) were left to the maker's own judgement with no enforcement. This column is the audit
+         evidence: which of those reasons (or a plain "Normal" closure) applied to this specific
+         closure, set once by FixedDepositAccount#prematureClosure and never changed afterward.
+         See PrematureClosureReasonType for the stored values. -->
+    <changeSet author="CBS" id="0588-1-add-premature-closure-reason">
+        <preConditions onFail="MARK_RAN">
+            <and>
+                <tableExists tableName="m_deposit_account_term_and_preclosure"/>
+                <not>
+                    <columnExists tableName="m_deposit_account_term_and_preclosure" columnName="premature_closure_reason_enum"/>
+                </not>
+            </and>
+        </preConditions>
+        <addColumn tableName="m_deposit_account_term_and_preclosure">
+            <column name="premature_closure_reason_enum" type="INTEGER"/>
+        </addColumn>
+    </changeSet>
+
+</databaseChangeLog>

fineract-savings/src/main/java/org/apache/fineract/portfolio/savings/data/FixedDepositAccountData.java

@@ -674,7 +674,7 @@ public final class FixedDepositAccountData extends DepositAccountData {
 
     public static FixedDepositAccountData preClosureDetails(final Long accountId, BigDecimal maturityAmount,
             final Collection<EnumOptionData> onAccountClosureOptions, final Collection<PaymentTypeData> paymentTypeOptions,
-            final Collection<SavingsAccountData> savingsAccountDatas) {
+            final Collection<SavingsAccountData> savingsAccountDatas, final BigDecimal effectiveInterestRate) {
 
         final Long groupId = null;
         final String groupName = null;
@@ -689,7 +689,12 @@ public final class FixedDepositAccountData extends DepositAccountData {
         final SavingsAccountStatusEnumData status = null;
         final SavingsAccountApplicationTimelineData timeline = null;
         final CurrencyData currency = null;
-        final BigDecimal nominalAnnualInterestRate = null;
+        // Not the account's stored contracted rate -- the rate actually resolved for THIS premature
+        // closure preview (see FixedDepositAccount#getEffectiveInterestRateAsFraction, read back
+        // straight after the calculation by the caller), so a maker can see which of the RBI-default
+        // actual-period rate, a bank's "use contracted rate" override, and any penalty deduction ended
+        // up applying, rather than only the final rupee amount.
+        final BigDecimal nominalAnnualInterestRate = effectiveInterestRate;
         final EnumOptionData interestPeriodType = null;
         final EnumOptionData interestPostingPeriodType = null;
         final EnumOptionData interestCalculationType = null;

fineract-savings/src/main/java/org/apache/fineract/portfolio/savings/domain/DepositAccountTermAndPreClosure.java

@@ -45,6 +45,7 @@ import org.apache.fineract.infrastructure.core.data.DataValidatorBuilder;
 import org.apache.fineract.infrastructure.core.domain.AbstractPersistableCustom;
 import org.apache.fineract.infrastructure.core.service.DateUtils;
 import org.apache.fineract.portfolio.savings.DepositAccountOnClosureType;
+import org.apache.fineract.portfolio.savings.PrematureClosureReasonType;
 import org.apache.fineract.portfolio.savings.SavingsPeriodFrequencyType;
 import org.apache.fineract.portfolio.savings.service.SavingsEnumerations;
 
@@ -118,6 +119,20 @@ public class DepositAccountTermAndPreClosure extends AbstractPersistableCustom<L
         this.fdAccountNumber = fdAccountNumber;
     }
 
+    // RBI audit evidence: why THIS closure happened, set once by FixedDepositAccount#prematureClosure
+    // and never changed afterward -- see PrematureClosureReasonType. Null on an account that was never
+    // prematurely closed (including one still active), or on one closed before this column existed.
+    @Column(name = "premature_closure_reason_enum")
+    private Integer prematureClosureReason;
+
+    public PrematureClosureReasonType getPrematureClosureReason() {
+        return PrematureClosureReasonType.fromInt(this.prematureClosureReason);
+    }
+
+    public void updatePrematureClosureReason(final PrematureClosureReasonType reason) {
+        this.prematureClosureReason = (reason == null || reason.isInvalid()) ? null : reason.getValue();
+    }
+
     // Which renewal cycle of one logical FD this account represents: 0 = originally opened account,
     // 1 = first renewal, and so on. Lets the UI present "one FD, many terms" over what is physically
     // a chain of per-term account rows.