diff --git a/web/src/pages/SvodPage/SummaryTable.jsx b/web/src/pages/SvodPage/SummaryTable.jsx
index c00da85..0939371 100644
--- a/web/src/pages/SvodPage/SummaryTable.jsx
+++ b/web/src/pages/SvodPage/SummaryTable.jsx
@@ -8,6 +8,7 @@ import { buildRowHierarchy } from '../../components/RealtimeTable/utils/rowUtils
 import { createFixedRowVirtualizerOptions, getRootFontSizePx } from '../../components/RealtimeTable/utils/virtualizerOptions';
 import DenominationSelect from '../../components/common/DenominationSelect';
 import useDenomination from '../../components/common/useDenomination';
+import { formatSummaryAmount } from './summaryFormat';
 
 const tableSize = (rem) => rem * 16;
 // Высота строки задана в rem явно (строка и ячейка), виртуализатор layout не читает.
@@ -78,10 +79,9 @@ const scaleColumns = (columns, factor, denomination) =>
 						Cell: ({ cell }) => {
 							const value = cell.getValue();
 							if (value === null || value === undefined || value === '') return originalCell ? originalCell({ cell }) : '—';
-							const numeric = Number(value);
-							if (!Number.isFinite(numeric)) return originalCell ? originalCell({ cell }) : value;
-							if (numeric === 0) return '-';
-							return new Intl.NumberFormat('ru-RU', { maximumFractionDigits: 2 }).format(numeric * factor);
+							const formatted = formatSummaryAmount(value, factor);
+							if (formatted !== null) return formatted;
+							return originalCell ? originalCell({ cell }) : value;
 						},
 					}
 				: {}),
diff --git a/web/src/pages/SvodPage/summaryFormat.js b/web/src/pages/SvodPage/summaryFormat.js
new file mode 100644
index 0000000..7038a50
--- /dev/null
+++ b/web/src/pages/SvodPage/summaryFormat.js
@@ -0,0 +1,10 @@
+const amountFormatter = new Intl.NumberFormat('ru-RU', { maximumFractionDigits: 2 });
+
+// Возвращает null, если значение не число: вызывающий отдаёт исходное значение.
+export const formatSummaryAmount = (value, factor) => {
+	if (value === null || value === undefined || value === '') return null;
+	const numeric = Number(value);
+	if (!Number.isFinite(numeric)) return null;
+	if (numeric === 0) return '-';
+	return amountFormatter.format(numeric * factor);
+};
diff --git a/web/src/pages/SvodPage/summaryFormat.test.js b/web/src/pages/SvodPage/summaryFormat.test.js
new file mode 100644
index 0000000..668d68a
--- /dev/null
+++ b/web/src/pages/SvodPage/summaryFormat.test.js
@@ -0,0 +1,37 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+const NBSP = ' ';
+
+test('formatSummaryAmount: форматирование и множители', async () => {
+	const { formatSummaryAmount } = await import('./summaryFormat.js');
+	assert.equal(formatSummaryAmount(0, 1), '-');
+	assert.equal(formatSummaryAmount('0', 1e-3), '-');
+	assert.equal(formatSummaryAmount(1234.567, 1), `1${NBSP}234,57`);
+	assert.equal(formatSummaryAmount(5_000_000, 1e-3), `5${NBSP}000`);
+	assert.equal(formatSummaryAmount(5_000_000, 1e-6), '5');
+	assert.equal(formatSummaryAmount('1500', 1), `1${NBSP}500`);
+});
+
+test('formatSummaryAmount: нечисловые значения возвращают null', async () => {
+	const { formatSummaryAmount } = await import('./summaryFormat.js');
+	for (const v of [null, undefined, '', 'abc', Number.NaN, Number.POSITIVE_INFINITY]) {
+		assert.equal(formatSummaryAmount(v, 1), null);
+	}
+});
+
+test('Intl.NumberFormat создаётся один раз на модуль', async () => {
+	const Original = Intl.NumberFormat;
+	let created = 0;
+	Intl.NumberFormat = function CountingNumberFormat(...args) {
+		created += 1;
+		return new Original(...args);
+	};
+	try {
+		const { formatSummaryAmount } = await import('./summaryFormat.js?fresh');
+		for (let i = 1; i <= 50; i += 1) formatSummaryAmount(i * 100, 1e-3);
+		assert.equal(created, 1);
+	} finally {
+		Intl.NumberFormat = Original;
+	}
+});