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Extra Payment Calculator

See months and interest saved by adding an extra monthly loan payment.

🌐 Uses API
Also try:Mortgage Tools Hub·Cryptocurrency Portfolio Tracker·Time Until Retirement

Frequently asked questions

How do extra payments save interest?

Extra principal reduces your balance sooner, so less interest accrues. The earlier and more you prepay, the more you save.

Lump sum vs monthly extra—what’s better?

Paying earlier usually saves more. A lump sum today often beats the same total spread over months, but cash flow matters.

Could there be prepayment penalties?

Some loans have prepayment penalties or recast rules. Check your lender’s terms before making extra payments.

Related tools

Try Recast vs Extra, Biweekly Mortgage, and Refinance Break-Even to compare payoff strategies.

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About This Tool

See how extra payments can shorten your loan term and reduce total interest.

Key Benefits

How This Tool Works

  1. 1Enter your information in the input fields above
  2. 2Results calculate automatically in real-time
  3. 3Copy, share, or download your results as needed
  4. 4All processing happens locally in your browser for privacy

When to Use This Tool

Pro Tip:

Why Use INSINEX Tools?

Privacy First

Your data never leaves your device. All calculations happen locally in your browser.

Instant Results

No waiting, no loading—results appear immediately as you type.

Works Everywhere

Access from any device with a browser. Many tools even work offline.

Related topics: extra payment, loan payoff, prepayment, loan acceleration, interest savings

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Privacy

Most processing happens locally in your browser for speed & privacy. Network calls occur only for live rates or updates.

Ask AI

Premium

Premium feature

Historical analysis & trends

Track your past calculations and visualize patterns.

Calculation presets

Save, load, and manage your favorite calculation setups.

No presets saved yet.

Scenario planning

Compare multiple inputs side-by-side.

Batch processing

Upload a CSV to compute results in bulk.

Custom formulas

Create and reuse your own rules.

External data

Connect Google Sheets or an API as inputs.

By paying you agree to our Terms & Conditions • Privacy Policy • Shipping Policy • Cancellation & Refunds

Free Tier Usage0/100 calculations today
Premium feature

Historical analysis & trends

Track your past calculations and visualize patterns.

Calculation presets

Save, load, and manage your favorite calculation setups.

No presets saved yet.

Scenario planning

Compare multiple inputs side-by-side.

Batch processing

Upload a CSV to compute results in bulk.

Custom formulas

Create and reuse your own rules.

External data

Connect Google Sheets or an API as inputs.

By paying you agree to our Terms & Conditions • Privacy Policy • Shipping Policy • Cancellation & Refunds