diff --git a/models/baseModels/PurchaseInvoice/PurchaseInvoice.ts b/models/baseModels/PurchaseInvoice/PurchaseInvoice.ts
index bb0002d43..38f447c9b 100644
--- a/models/baseModels/PurchaseInvoice/PurchaseInvoice.ts
+++ b/models/baseModels/PurchaseInvoice/PurchaseInvoice.ts
@@ -47,7 +47,7 @@ export class PurchaseInvoice extends Invoice {
         getTransactionStatusColumn(),
         'party',
         'date',
-        'grandTotal',
+        'baseGrandTotal',
         'outstandingAmount',
       ],
     };
diff --git a/models/baseModels/SalesInvoice/SalesInvoice.ts b/models/baseModels/SalesInvoice/SalesInvoice.ts
index 103cab440..5fd7b0d05 100644
--- a/models/baseModels/SalesInvoice/SalesInvoice.ts
+++ b/models/baseModels/SalesInvoice/SalesInvoice.ts
@@ -47,7 +47,7 @@ export class SalesInvoice extends Invoice {
         getTransactionStatusColumn(),
         'party',
         'date',
-        'grandTotal',
+        'baseGrandTotal',
         'outstandingAmount',
       ],
     };
diff --git a/models/baseModels/TaxSummary/TaxSummary.ts b/models/baseModels/TaxSummary/TaxSummary.ts
index 7a4fbd062..bb9438e49 100644
--- a/models/baseModels/TaxSummary/TaxSummary.ts
+++ b/models/baseModels/TaxSummary/TaxSummary.ts
@@ -1,8 +1,48 @@
+import { Fyo } from 'fyo';
+import { DocValueMap } from 'fyo/core/types';
 import { Doc } from 'fyo/model/doc';
+import { CurrenciesMap } from 'fyo/model/types';
+import { DEFAULT_CURRENCY } from 'fyo/utils/consts';
 import { Money } from 'pesa';
+import { FieldTypeEnum, Schema } from 'schemas/types';
+import { Invoice } from '../Invoice/Invoice';
 
 export class TaxSummary extends Doc {
   account?: string;
   rate?: number;
   amount?: Money;
+  parentdoc?: Invoice;
+
+  get exchangeRate() {
+    return this.parentdoc?.exchangeRate ?? 1;
+  }
+
+  get currency() {
+    return this.parentdoc?.currency ?? DEFAULT_CURRENCY;
+  }
+
+  constructor(schema: Schema, data: DocValueMap, fyo: Fyo) {
+    super(schema, data, fyo);
+    this._setGetCurrencies();
+  }
+
+  getCurrencies: CurrenciesMap = {};
+  _getCurrency() {
+    if (this.exchangeRate === 1) {
+      return this.fyo.singles.SystemSettings?.currency ?? DEFAULT_CURRENCY;
+    }
+
+    return this.currency;
+  }
+  _setGetCurrencies() {
+    const currencyFields = this.schema.fields.filter(
+      ({ fieldtype }) => fieldtype === FieldTypeEnum.Currency
+    );
+
+    const getCurrency = this._getCurrency.bind(this);
+
+    for (const { fieldname } of currencyFields) {
+      this.getCurrencies[fieldname] ??= getCurrency;
+    }
+  }
 }
diff --git a/schemas/app/Invoice.json b/schemas/app/Invoice.json
index 98891ca3e..6e281fbbf 100644
--- a/schemas/app/Invoice.json
+++ b/schemas/app/Invoice.json
@@ -69,7 +69,7 @@
     },
     {
       "fieldname": "baseGrandTotal",
-      "label": "Grand Total (Company Currency)",
+      "label": "Base Grand Total",
       "fieldtype": "Currency",
       "readOnly": true
     },