diff --git a/.oxlintrc.json b/.oxlintrc.json
index f1c3d9b482..3451a56e92 100644
--- a/.oxlintrc.json
+++ b/.oxlintrc.json
@@ -106,7 +106,7 @@
     "typescript/require-array-sort-compare": "error",
     "typescript/unbound-method": "error",
     "typescript/no-for-in-array": "warn", // TODO: covert to error
-    "typescript/restrict-template-expressions": "warn", // TODO: covert to error
+    "typescript/restrict-template-expressions": "error",
 
     // Import rules
     "import/consistent-type-specifier-style": "error",
diff --git a/packages/desktop-client/e2e/page-models/configuration-page.ts b/packages/desktop-client/e2e/page-models/configuration-page.ts
index f3c08fcf85..01801e5620 100644
--- a/packages/desktop-client/e2e/page-models/configuration-page.ts
+++ b/packages/desktop-client/e2e/page-models/configuration-page.ts
@@ -61,7 +61,7 @@ export class ConfigurationPage {
         break;
 
       default:
-        throw new Error(`Unrecognized import type: ${type}`);
+        throw new Error(`Unrecognized import type: ${String(type)}`);
     }
 
     const fileChooser = await fileChooserPromise;
diff --git a/packages/desktop-client/e2e/page-models/custom-report-page.ts b/packages/desktop-client/e2e/page-models/custom-report-page.ts
index 885e9bd947..ec5a211a48 100644
--- a/packages/desktop-client/e2e/page-models/custom-report-page.ts
+++ b/packages/desktop-client/e2e/page-models/custom-report-page.ts
@@ -39,7 +39,7 @@ export class CustomReportPage {
           .click();
         break;
       default:
-        throw new Error(`Unrecognized mode: ${mode}`);
+        throw new Error(`Unrecognized mode: ${String(mode)}`);
     }
   }
 }
diff --git a/packages/desktop-client/src/budget/mutations.ts b/packages/desktop-client/src/budget/mutations.ts
index 3c7b87d3f0..a7f2ce64eb 100644
--- a/packages/desktop-client/src/budget/mutations.ts
+++ b/packages/desktop-client/src/budget/mutations.ts
@@ -779,7 +779,7 @@ export function useBudgetActions() {
           });
           return null;
         default:
-          throw new Error(`Unknown budget action type: ${type}`);
+          throw new Error(`Unknown budget action type: ${String(type)}`);
       }
     },
     onSuccess: notification => {
diff --git a/packages/desktop-client/src/components/HelpMenu.tsx b/packages/desktop-client/src/components/HelpMenu.tsx
index b14d00a2df..5f5d357f5c 100644
--- a/packages/desktop-client/src/components/HelpMenu.tsx
+++ b/packages/desktop-client/src/components/HelpMenu.tsx
@@ -95,7 +95,7 @@ export const HelpMenu = () => {
         dispatch(pushModal({ modal: { name: 'goal-templates' } }));
         break;
       default:
-        throw new Error(`Unrecognized menu option: ${item}`);
+        throw new Error(`Unrecognized menu option: ${String(item)}`);
     }
   };
 
diff --git a/packages/desktop-client/src/components/budget/envelope/IncomeMenu.tsx b/packages/desktop-client/src/components/budget/envelope/IncomeMenu.tsx
index ac1377043e..3db2f41139 100644
--- a/packages/desktop-client/src/components/budget/envelope/IncomeMenu.tsx
+++ b/packages/desktop-client/src/components/budget/envelope/IncomeMenu.tsx
@@ -45,7 +45,7 @@ export function IncomeMenu({
               onClose();
               break;
             default:
-              throw new Error(`Unrecognized menu option: ${name}`);
+              throw new Error(`Unrecognized menu option: ${String(name)}`);
           }
         }}
         items={[
diff --git a/packages/desktop-client/src/components/budget/goals/reducer.ts b/packages/desktop-client/src/components/budget/goals/reducer.ts
index 455c7b3ba1..5ce50eff50 100644
--- a/packages/desktop-client/src/components/budget/goals/reducer.ts
+++ b/packages/desktop-client/src/components/budget/goals/reducer.ts
@@ -68,7 +68,9 @@ export const getInitialState = (template: Template | null): ReducerState => {
     case 'error':
       throw new Error('An error occurred while parsing the template');
     default:
-      throw new Error(`Unknown template type: ${type satisfies undefined}`);
+      throw new Error(
+        `Unknown template type: ${String(type satisfies undefined)}`,
+      );
   }
 };
 
@@ -168,7 +170,9 @@ const changeType = (
       };
     default:
       // Make sure we're not missing any cases
-      throw new Error(`Unknown display type: ${visualType satisfies never}`);
+      throw new Error(
+        `Unknown display type: ${String(visualType satisfies never)}`,
+      );
   }
 };
 
@@ -251,6 +255,6 @@ export const templateReducer = (
       return mapTemplateTypesForUpdate(state, action.payload);
     default:
       // Make sure we're not missing any cases
-      throw new Error(`Unknown display type: ${type satisfies never}`);
+      throw new Error(`Unknown display type: ${String(type satisfies never)}`);
   }
 };
diff --git a/packages/desktop-client/src/components/budget/tracking/BalanceMenu.tsx b/packages/desktop-client/src/components/budget/tracking/BalanceMenu.tsx
index 9903296ef7..01d6da269a 100644
--- a/packages/desktop-client/src/components/budget/tracking/BalanceMenu.tsx
+++ b/packages/desktop-client/src/components/budget/tracking/BalanceMenu.tsx
@@ -34,7 +34,7 @@ export function BalanceMenu({
             onCarryover?.(!carryover);
             break;
           default:
-            throw new Error(`Unrecognized menu option: ${name}`);
+            throw new Error(`Unrecognized menu option: ${String(name)}`);
         }
       }}
       items={[
diff --git a/packages/desktop-client/src/components/mobile/transactions/TransactionList.tsx b/packages/desktop-client/src/components/mobile/transactions/TransactionList.tsx
index e1f8d32c05..328c1d9919 100644
--- a/packages/desktop-client/src/components/mobile/transactions/TransactionList.tsx
+++ b/packages/desktop-client/src/components/mobile/transactions/TransactionList.tsx
@@ -506,7 +506,7 @@ function SelectedTransactionsFloatingActionBar({
                           : integerToCurrency(Number(value));
                         break;
                       case 'notes':
-                        displayValue = `${mode} with ${value}`;
+                        displayValue = `${mode} with ${String(value)}`;
                         break;
                       default:
                         displayValue = value;
@@ -514,15 +514,15 @@ function SelectedTransactionsFloatingActionBar({
                     }
 
                     showUndoNotification({
-                      message: `Successfully updated ${name} of ${ids.length} transaction${ids.length > 1 ? 's' : ''} to [${displayValue}](#${displayValue}).`,
+                      message: `Successfully updated ${name} of ${ids.length} transaction${ids.length > 1 ? 's' : ''} to [${String(displayValue)}](#${String(displayValue)}).`,
                       messageActions: {
                         [String(displayValue)]: () => {
                           switch (name) {
                             case 'account':
-                              void navigate(`/accounts/${value}`);
+                              void navigate(`/accounts/${String(value)}`);
                               break;
                             case 'category':
-                              void navigate(`/categories/${value}`);
+                              void navigate(`/categories/${String(value)}`);
                               break;
                             case 'payee':
                               void navigate(`/payees`);
diff --git a/packages/desktop-client/src/components/modals/AccountMenuModal.tsx b/packages/desktop-client/src/components/modals/AccountMenuModal.tsx
index 4540160085..4715edf278 100644
--- a/packages/desktop-client/src/components/modals/AccountMenuModal.tsx
+++ b/packages/desktop-client/src/components/modals/AccountMenuModal.tsx
@@ -295,7 +295,7 @@ function AdditionalAccountMenu({
                   onToggleReconciled?.();
                   break;
                 default:
-                  throw new Error(`Unrecognized menu option: ${name}`);
+                  throw new Error(`Unrecognized menu option: ${String(name)}`);
               }
             }}
           />
diff --git a/packages/desktop-client/src/components/modals/EnvelopeIncomeBalanceMenuModal.tsx b/packages/desktop-client/src/components/modals/EnvelopeIncomeBalanceMenuModal.tsx
index e64ba9c233..7a6ed478d8 100644
--- a/packages/desktop-client/src/components/modals/EnvelopeIncomeBalanceMenuModal.tsx
+++ b/packages/desktop-client/src/components/modals/EnvelopeIncomeBalanceMenuModal.tsx
@@ -117,7 +117,7 @@ export function EnvelopeIncomeBalanceMenuModal({
                   onShowActivity?.();
                   break;
                 default:
-                  throw new Error(`Unrecognized menu option: ${name}`);
+                  throw new Error(`Unrecognized menu option: ${String(name)}`);
               }
             }}
             items={[
diff --git a/packages/desktop-client/src/components/modals/ImportTransactionsModal/SelectField.tsx b/packages/desktop-client/src/components/modals/ImportTransactionsModal/SelectField.tsx
index e7f3c253d4..97a1deec45 100644
--- a/packages/desktop-client/src/components/modals/ImportTransactionsModal/SelectField.tsx
+++ b/packages/desktop-client/src/components/modals/ImportTransactionsModal/SelectField.tsx
@@ -26,7 +26,7 @@ export function SelectField({
         option,
         hasHeaderRow
           ? option
-          : `Column ${parseInt(option) + 1} (${firstTransaction[option]})`,
+          : `Column ${parseInt(option) + 1} (${String(firstTransaction[option])})`,
       ] as const,
   );
 
diff --git a/packages/desktop-client/src/components/modals/SelectLinkedAccountsModal.tsx b/packages/desktop-client/src/components/modals/SelectLinkedAccountsModal.tsx
index 36c9d97833..5d90b6e2e8 100644
--- a/packages/desktop-client/src/components/modals/SelectLinkedAccountsModal.tsx
+++ b/packages/desktop-client/src/components/modals/SelectLinkedAccountsModal.tsx
@@ -128,7 +128,7 @@ export function SelectLinkedAccountsModal({
             externalAccounts: toSort as SyncServerGoCardlessAccount[],
           };
         default:
-          throw new Error(`Unrecognized sync source: ${syncSource}`);
+          throw new Error(`Unrecognized sync source: ${String(syncSource)}`);
       }
     }, [externalAccounts, syncSource, requisitionId]);
 
diff --git a/packages/desktop-client/src/components/payees/PayeeTableRow.tsx b/packages/desktop-client/src/components/payees/PayeeTableRow.tsx
index 28c3efe680..19549eb3b6 100644
--- a/packages/desktop-client/src/components/payees/PayeeTableRow.tsx
+++ b/packages/desktop-client/src/components/payees/PayeeTableRow.tsx
@@ -209,7 +209,7 @@ export const PayeeTableRow = memo(
                   onCreateRule(id);
                   break;
                 default:
-                  throw new Error(`Unrecognized menu option: ${name}`);
+                  throw new Error(`Unrecognized menu option: ${String(name)}`);
               }
               setMenuOpen(false);
             }}
diff --git a/packages/desktop-client/src/components/reports/Overview.tsx b/packages/desktop-client/src/components/reports/Overview.tsx
index c907049fa1..b0ed72554e 100644
--- a/packages/desktop-client/src/components/reports/Overview.tsx
+++ b/packages/desktop-client/src/components/reports/Overview.tsx
@@ -671,7 +671,7 @@ export function Overview({ dashboard }: OverviewProps) {
                                 break;
                               default:
                                 throw new Error(
-                                  `Unrecognized menu option: ${item}`,
+                                  `Unrecognized menu option: ${String(item)}`,
                                 );
                             }
                           }}
diff --git a/packages/desktop-client/src/components/rules/RuleRow.tsx b/packages/desktop-client/src/components/rules/RuleRow.tsx
index 1cb76dd5a8..6a8e89d9da 100644
--- a/packages/desktop-client/src/components/rules/RuleRow.tsx
+++ b/packages/desktop-client/src/components/rules/RuleRow.tsx
@@ -99,7 +99,7 @@ export const RuleRow = memo(
                   onEditRule(rule);
                   break;
                 default:
-                  throw new Error(`Unrecognized menu option: ${name}`);
+                  throw new Error(`Unrecognized menu option: ${String(name)}`);
               }
               setMenuOpen(false);
             }}
diff --git a/packages/desktop-client/src/components/rules/Value.tsx b/packages/desktop-client/src/components/rules/Value.tsx
index 26f0f053ab..67cfe39c9e 100644
--- a/packages/desktop-client/src/components/rules/Value.tsx
+++ b/packages/desktop-client/src/components/rules/Value.tsx
@@ -137,7 +137,7 @@ export function Value<T>({
 
           return '…';
         default:
-          throw new Error(`Unknown field ${field}`);
+          throw new Error(`Unknown field ${String(field)}`);
       }
     }
   }
diff --git a/packages/desktop-client/src/components/schedules/index.tsx b/packages/desktop-client/src/components/schedules/index.tsx
index 16331e6795..d8f0b7f07a 100644
--- a/packages/desktop-client/src/components/schedules/index.tsx
+++ b/packages/desktop-client/src/components/schedules/index.tsx
@@ -72,7 +72,7 @@ export function Schedules() {
           await send('schedule/delete', { id });
           break;
         default:
-          throw new Error(`Unknown action: ${name}`);
+          throw new Error(`Unknown action: ${String(name)}`);
       }
     },
     [],
diff --git a/packages/desktop-client/src/components/sidebar/Account.tsx b/packages/desktop-client/src/components/sidebar/Account.tsx
index 85d8b18466..263d5984bc 100644
--- a/packages/desktop-client/src/components/sidebar/Account.tsx
+++ b/packages/desktop-client/src/components/sidebar/Account.tsx
@@ -272,7 +272,9 @@ export function Account<FieldName extends SheetFields<'account'>>({
                       break;
                     }
                     default: {
-                      throw new Error(`Unrecognized menu option: ${type}`);
+                      throw new Error(
+                        `Unrecognized menu option: ${String(type)}`,
+                      );
                     }
                   }
                   setMenuOpen(false);
diff --git a/packages/desktop-client/src/components/tags/TagRow.tsx b/packages/desktop-client/src/components/tags/TagRow.tsx
index ef1b0181c4..eced72c0a0 100644
--- a/packages/desktop-client/src/components/tags/TagRow.tsx
+++ b/packages/desktop-client/src/components/tags/TagRow.tsx
@@ -114,7 +114,7 @@ export const TagRow = memo(
                   deleteTag({ id: tag.id });
                   break;
                 default:
-                  throw new Error(`Unrecognized menu option: ${name}`);
+                  throw new Error(`Unrecognized menu option: ${String(name)}`);
               }
               setMenuOpen(false);
             }}
diff --git a/packages/desktop-client/src/components/transactions/TransactionsTable.test.tsx b/packages/desktop-client/src/components/transactions/TransactionsTable.test.tsx
index 66d08d2549..72d575261d 100644
--- a/packages/desktop-client/src/components/transactions/TransactionsTable.test.tsx
+++ b/packages/desktop-client/src/components/transactions/TransactionsTable.test.tsx
@@ -400,7 +400,7 @@ expect.extend({
     } else {
       return {
         message: () =>
-          `Expected ${validPayeeListWithFavorite} to have favorite stars`,
+          `Expected ${String(validPayeeListWithFavorite)} to have favorite stars`,
         pass: true,
       };
     }
diff --git a/packages/desktop-client/src/hooks/useTransactionBatchActions.ts b/packages/desktop-client/src/hooks/useTransactionBatchActions.ts
index d13f9295ef..e24a839657 100644
--- a/packages/desktop-client/src/hooks/useTransactionBatchActions.ts
+++ b/packages/desktop-client/src/hooks/useTransactionBatchActions.ts
@@ -120,10 +120,10 @@ export function useTransactionBatchActions() {
         if (name === 'notes') {
           if (mode === 'prepend') {
             valueToSet =
-              trans.notes === null ? value : `${value}${trans.notes}`;
+              trans.notes === null ? value : `${String(value)}${trans.notes}`;
           } else if (mode === 'append') {
             valueToSet =
-              trans.notes === null ? value : `${trans.notes}${value}`;
+              trans.notes === null ? value : `${trans.notes}${String(value)}`;
           } else if (mode === 'replace') {
             valueToSet = value;
           } else if (
diff --git a/packages/desktop-electron/index.ts b/packages/desktop-electron/index.ts
index 1095192838..bad47d9e6c 100644
--- a/packages/desktop-electron/index.ts
+++ b/packages/desktop-electron/index.ts
@@ -323,7 +323,10 @@ async function startSyncServer() {
 
     return await Promise.race([syncServerPromise, syncServerTimeout]); // Either the server has started or the timeout is reached
   } catch (error) {
-    logMessage('error', `Sync-Server: Error starting sync server: ${error}`);
+    logMessage(
+      'error',
+      `Sync-Server: Error starting sync server: ${String(error)}`,
+    );
   }
 }
 
@@ -661,7 +664,7 @@ ipcMain.handle(
     } catch (error) {
       logMessage(
         'error',
-        `There was an error moving your directory:  ${error}`,
+        `There was an error moving your directory:  ${String(error)}`,
       );
       throw error;
     }
@@ -687,7 +690,7 @@ ipcMain.handle(
       // This call needs to succeed to allow the user to continue using the app with the files in the new location.
       logMessage(
         'error',
-        `There was an error removing the old directory: ${error}`,
+        `There was an error removing the old directory: ${String(error)}`,
       );
     }
   },
diff --git a/packages/desktop-electron/server.ts b/packages/desktop-electron/server.ts
index 8f7fc61719..81ec6e4c9f 100644
--- a/packages/desktop-electron/server.ts
+++ b/packages/desktop-electron/server.ts
@@ -35,7 +35,7 @@ const lazyLoadBackend = async (isDev: boolean) => {
   } catch (error) {
     console.error('Failed to init the server bundle after all retries:', error);
     throw new Error(
-      `Failed to init the server bundle after all retries: ${error}`,
+      `Failed to init the server bundle after all retries: ${String(error)}`,
     );
   }
 };
diff --git a/packages/loot-core/src/mocks/util.ts b/packages/loot-core/src/mocks/util.ts
index 1e27273f47..eef6066a15 100644
--- a/packages/loot-core/src/mocks/util.ts
+++ b/packages/loot-core/src/mocks/util.ts
@@ -76,7 +76,7 @@ export function patchFetchForSqlJS(baseURL: string) {
           },
         });
       }
-      return Promise.reject(new Error(`fetch not mocked for ${url}`));
+      return Promise.reject(new Error(`fetch not mocked for ${String(url)}`));
     },
   );
 }
diff --git a/packages/loot-core/src/server/api.ts b/packages/loot-core/src/server/api.ts
index 8b6ce30690..fbb94dcbab 100644
--- a/packages/loot-core/src/server/api.ts
+++ b/packages/loot-core/src/server/api.ts
@@ -944,7 +944,7 @@ handlers['api/schedule-update'] = withMutation(async function ({
               break;
             default:
               throw APIError(
-                `Invalid amount operator: ${value}. Expected: is, isapprox, or isbetween`,
+                `Invalid amount operator: ${String(value)}. Expected: is, isapprox, or isbetween`,
               );
           }
           sched._conditions[amountIndex].op = convertedOp;
diff --git a/packages/loot-core/src/server/aql/compiler.ts b/packages/loot-core/src/server/aql/compiler.ts
index 778fc0b0c9..22f262adcd 100644
--- a/packages/loot-core/src/server/aql/compiler.ts
+++ b/packages/loot-core/src/server/aql/compiler.ts
@@ -715,7 +715,11 @@ const compileOp = saveStack('op', (state, fieldRef, opData) => {
       // Dedupe the ids
       const ids = [...new Set(right)];
 
-      return `${left} IN (` + ids.map(id => `'${id}'`).join(',') + ')';
+      return (
+        `${String(left)} IN (` +
+        ids.map(id => `'${String(id)}'`).join(',') +
+        ')'
+      );
     }
     case '$like': {
       const [left, right] = valArray(state, [lhs, rhs], ['string', 'string']);
diff --git a/packages/loot-core/src/server/budget/category-template-context.ts b/packages/loot-core/src/server/budget/category-template-context.ts
index 6000b23ba9..59ba98c9a8 100644
--- a/packages/loot-core/src/server/budget/category-template-context.ts
+++ b/packages/loot-core/src/server/budget/category-template-context.ts
@@ -611,7 +611,7 @@ export class CategoryTemplateContext {
           monthUtils.addMonths(date, numPeriods * 12);
         break;
       default:
-        throw new Error(`Unrecognized periodic period: ${period}`);
+        throw new Error(`Unrecognized periodic period: ${String(period)}`);
     }
 
     //shift the starting date until its in our month or in the future
diff --git a/packages/loot-core/src/server/dashboard/app.ts b/packages/loot-core/src/server/dashboard/app.ts
index b8d7b4fb3b..4b8901dded 100644
--- a/packages/loot-core/src/server/dashboard/app.ts
+++ b/packages/loot-core/src/server/dashboard/app.ts
@@ -89,7 +89,7 @@ const exportModel = {
 
       if (!isWidgetType(widget.type)) {
         throw new ValidationError(
-          `Invalid widget.${idx}.type value ${widget.type}.`,
+          `Invalid widget.${idx}.type value ${String(widget.type)}.`,
         );
       }
 
diff --git a/packages/loot-core/src/server/util/custom-sync-mapping.ts b/packages/loot-core/src/server/util/custom-sync-mapping.ts
index ddf9311b71..071b02c3a9 100644
--- a/packages/loot-core/src/server/util/custom-sync-mapping.ts
+++ b/packages/loot-core/src/server/util/custom-sync-mapping.ts
@@ -24,7 +24,7 @@ export const mappingsFromString = (str: string): Mappings => {
     );
   } catch (e) {
     const message = e instanceof Error ? e.message : e;
-    throw new Error(`Failed to parse mapping: ${message}`);
+    throw new Error(`Failed to parse mapping: ${String(message)}`);
   }
 };
 
diff --git a/packages/loot-core/src/shared/errors.ts b/packages/loot-core/src/shared/errors.ts
index c5e484d13e..47dd43d865 100644
--- a/packages/loot-core/src/shared/errors.ts
+++ b/packages/loot-core/src/shared/errors.ts
@@ -79,7 +79,7 @@ export function getDownloadError({
     default:
       const info =
         meta && typeof meta === 'object' && 'fileId' in meta && meta.fileId
-          ? `, fileId: ${meta.fileId}`
+          ? `, fileId: ${String(meta.fileId)}`
           : '';
       return t(
         'Something went wrong trying to download that file, sorry! Visit https://actualbudget.org/contact/ for support. reason: {{reason}}{{info}}',
diff --git a/packages/sync-server/bin/actual-server.js b/packages/sync-server/bin/actual-server.js
index be20770de1..7797119c09 100755
--- a/packages/sync-server/bin/actual-server.js
+++ b/packages/sync-server/bin/actual-server.js
@@ -91,12 +91,12 @@ if (values.config) {
 
   if (!configExists) {
     console.log(
-      `Please specify a valid config path. The path ${values.config} does not exist.`,
+      `Please specify a valid config path. The path ${String(values.config)} does not exist.`,
     );
 
     process.exit();
   } else {
-    console.log(`Loading config from ${values.config}`);
+    console.log(`Loading config from ${String(values.config)}`);
     const configJson = JSON.parse(readFileSync(values.config, 'utf-8'));
     process.env.ACTUAL_CONFIG_PATH = values.config;
     setupDataDir(configJson.dataDir);
diff --git a/packages/sync-server/src/util/middlewares.ts b/packages/sync-server/src/util/middlewares.ts
index 4435b9e95c..347a0f4be5 100644
--- a/packages/sync-server/src/util/middlewares.ts
+++ b/packages/sync-server/src/util/middlewares.ts
@@ -55,7 +55,7 @@ const requestLoggerMiddleware = expressWinston.logger({
       const { timestamp, level, meta } = args;
       const { res, req } = meta as { res: Response; req: Request };
 
-      return `${timestamp} ${level}: ${req.method} ${res.statusCode} ${req.url}`;
+      return `${String(timestamp)} ${String(level)}: ${req.method} ${res.statusCode} ${req.url}`;
     }),
   ),
 });
diff --git a/upcoming-release-notes/7181.md b/upcoming-release-notes/7181.md
new file mode 100644
index 0000000000..a1c6aeb6f4
--- /dev/null
+++ b/upcoming-release-notes/7181.md
@@ -0,0 +1,6 @@
+---
+category: Enhancements
+authors: [MatissJanis]
+---
+
+Enable strict linting for template expressions, ensuring better error handling and message clarity.