AnyTool
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How do I create a loan amortization schedule?

Enter the loan amount, the annual interest rate and the term into AnyTool Amortization Calculator and it instantly builds the full month-by-month schedule — every payment split into principal, interest and remaining balance — using the reducing-balance method banks use. You can date each row with an optional start month, collapse the table to a yearly summary, add an extra monthly payment that shortens the term, and download the whole schedule as a CSV or copy it straight into a spreadsheet. A donut shows the principal-vs-interest split, you can switch the display between ₹, $, € and £, and everything is calculated in your browser, so nothing is ever uploaded.

  • Full month-by-month schedule: principal, interest and balance per payment
  • Collapsible to a yearly summary; optional start date dates every row
  • Download the schedule as CSV or copy the table to a spreadsheet
  • Optional extra payment goes to principal and shortens the term
  • 100% in your browser — no upload, no signup, works offline

What is

Amortization schedule

An amortization schedule is a table that lists every payment over the life of an amortizing loan and splits each one into the interest charged on the outstanding balance and the principal that the rest of the payment repays, then shows the remaining balance after the payment. Because interest is charged on the falling balance, early payments are mostly interest and later ones mostly principal. The level payment is the reducing-balance EMI, P × r × (1 + r)ⁿ ÷ ((1 + r)ⁿ − 1), where P is the loan amount, r the monthly rate and n the number of months.

Calculators

Related terms

Reducing-balance methodPrincipal and interestEMIOutstanding balanceCSV export

Frequently Asked Questions

It is a table listing every loan payment, split into interest and principal, showing the balance falling to zero.

An amortization schedule lists each payment over the life of a loan and breaks it into the interest charged on the current balance and the principal repaid by the rest of the payment, then shows the remaining balance. Because interest is charged on the outstanding balance, early payments are mostly interest and later ones mostly principal. AnyTool shows the full monthly schedule, a collapsible yearly summary, and lets you date every row and export the whole table to CSV.

Interest equals the balance times the monthly rate; the rest of the fixed payment reduces the principal.

For each row, the interest is the outstanding balance multiplied by the monthly rate (the annual rate divided by 12 and then by 100). The principal portion is the fixed payment minus that interest, and the new balance is the old balance minus the principal. Because the balance falls each month, the interest portion shrinks and the principal portion grows until the balance reaches zero. AnyTool computes this live for every month as you type.

Yes — download the full schedule as a CSV or copy it tab-separated straight into Excel or Google Sheets, all in your browser.

AnyTool builds the CSV file from the schedule entirely in your browser using a Blob, with a UTF-8 byte-order mark so currency symbols open cleanly in Excel. Each row carries the payment number, the optional date, the payment, the principal, the interest and the remaining balance. You can also copy the table tab-separated to paste directly into Google Sheets or Excel. Nothing is uploaded to generate or download the file.

It is a close fixed-rate estimate — real schedules differ with fees, insurance and rounding — and nothing is uploaded; every calculation runs in your browser.

The calculator assumes one fixed rate and a clean reducing-balance schedule. A lender’s actual amortization can differ slightly because of day-count and rounding conventions, processing fees, taxes, bundled loan-protection insurance, and rate changes on variable-rate loans. Treat the table as a close planning estimate and confirm the exact schedule with your lender. AnyTool Amortization Calculator runs entirely in your browser, so your loan details are never sent to a server and the page works offline.

Detailed Explanation

Methodology

How the Amortization Schedule Is Built

AnyTool Amortization Calculator builds a full month-by-month schedule in the browser using the reducing-balance method. The level payment is the standard EMI, P × r × (1 + r)ⁿ ÷ ((1 + r)ⁿ − 1), where P is the loan amount, r the monthly rate (annual rate ÷ 12 ÷ 100) and n the number of months. For each row it charges interest on the outstanding balance, repays the rest of the payment as principal, and carries the new balance forward until it reaches zero. Because the balance falls each month, the interest share shrinks and the principal share grows from the first row to the last. The 0% case degrades cleanly to a flat payment of P ÷ n. All arithmetic is pure client-side JavaScript shared through a reusable, unit-tested loan engine.

  • Payment = P × r × (1 + r)ⁿ ÷ ((1 + r)ⁿ − 1); r = annual rate ÷ 12 ÷ 100
  • Each row: interest = balance × r, principal = payment − interest
  • Balance carries forward until it reaches zero
  • Interest share is highest early and falls as the balance reduces
  • All math is client-side JavaScript — no server round-trip
Use Cases

Monthly or Yearly View, Dated Rows and CSV Export

The schedule is the centerpiece: every payment is split into principal, interest and remaining balance in a scrollable table with a sticky header, collapsible to a yearly roll-up for long terms. An optional start month dates every row (Jan 2026, Feb 2026, …) without the engine ever reading the clock — the dates are computed on the page. An optional extra monthly payment is applied straight to principal, shortening the term. The whole table can be downloaded as a CSV — built from a Blob with a UTF-8 byte-order mark so currency symbols open cleanly in Excel — or copied tab-separated for a one-paste import into Google Sheets or Excel. Each exported row carries the payment number, the optional date, the payment, the principal, the interest and the balance.

  • Month-by-month principal, interest and balance, collapsible to yearly
  • Optional start month dates every row; dates computed on the page
  • Optional extra monthly payment goes to principal and shortens the term
  • One-tap CSV download (Excel-ready BOM) or copy as a spreadsheet table
  • CSV columns: payment #, date, payment, principal, interest, balance
Limitations

A Fixed-Rate Estimate, Not the Final Lender Schedule

The schedule assumes a single fixed interest rate for the whole term and a clean reducing-balance calculation, so it is a close planning estimate rather than the exact table a lender will produce. Real schedules can differ by a small amount because of day-count and rounding conventions, processing or documentation fees, taxes, loan-protection insurance bundled into the payment, and — on variable or floating-rate loans — rate changes over time. Prepayment rules, lock-ins and how extra payments are applied also vary by lender. The page states these limits plainly and recommends confirming the exact amortization schedule with the lender.

  • Assumes one fixed rate and a clean reducing-balance schedule
  • Excludes processing fees, taxes and bundled insurance
  • Variable or floating-rate loans change as the benchmark rate moves
  • Lender prepayment rules and extra-payment handling vary
  • Presented as a planning estimate, not the final lender schedule
Privacy & Security

Privacy and Offline Use

Because all computation runs in the browser, your loan amount, interest rate and term are never sent to a server, there is no account or tracking, and the page works offline after first load. The CSV file is generated locally from a Blob, so even exporting the schedule uploads nothing. The currency selector (₹ / $ / € / £) only changes how numbers are displayed; the engine itself is currency-agnostic. The calculator is built on a shared, unit-tested loan engine so its behaviour is consistent and verifiable across AnyTool’s finance tools.

Amortization schedule: in-browser (AnyTool) vs typical online amortization calculators
CapabilityAnyToolTypical online calculators
ProcessingRuns in your browserOften server-side
Full scheduleEvery payment, monthly + collapsible yearlyOften summary or paywalled
Dated rowsOptional start month dates every rowSometimes absent
CSV / spreadsheet exportOne-tap CSV + copy table, client-sideOften gated, print-only or absent
Extra paymentExtra to principal, shortens the termFrequently absent
Currency₹ / $ / € / £ display toggleUsually fixed
Honest limitsStates fixed-rate / fees caveats plainlyOften omitted
Works offlineYes (PWA)No
Cost / signupFree, no signupOften ad-heavy or gated

AnyTool builds the schedule and the CSV locally and uploads nothing.