Mortgage Prepayment Savings Calculator

Estimate how recurring extra principal payments may shorten a fixed-rate mortgage and reduce interest.

Quick answer: Mortgage prepayment saves interest by reducing principal early. The value depends on your mortgage rate, remaining term, extra payment size, and whether cash has better alternative uses.

Years Saved Off Mortgage

0.0 years

Years Saved Off Mortgage

0.0 years

Current Monthly Payment (P&I)

$2,645

Total Interest Without Prepayment

$488,750

New Monthly Payment (P&I + extra)

$2,645

Payment composition

$2,645monthly payment

Current Monthly Payment (P&I)$2,645

Total$2,645

Current Monthly Payment (P&I): $2,645Total Interest Without Prepayment: $488,750New Monthly Payment (P&I + extra): $2,645Months Saved: 0 months

Months Saved

0 months

Estimated Interest Saved

Diagnostic

Over the life of this loan, you pay $488,750 in interest.

That's the cost of borrowing on top of what you actually got.

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What to do next

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Your action plan

1
Set the target and timeline for this plan
Estimate extra-principal payoff effects while disclosing the remaining final-partial-payment approximation.
2
Pressure-test one alternate scenario before deciding
Assumptions change the answer, especially when rates, taxes, or timing matter.
3
Save the result to Money Map or use the linked next action
Turn the result into a prioritized action instead of treating it as a one-off number.

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This is an educational estimate, not tax, legal, investment, or lending advice. Tax rules, rates, and eligibility change and depend on your full situation. Confirm with a qualified professional or the provider before acting.

Calculator action path

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About mortgage rates

Mortgage rates depend on loan type (30-yr fixed, 15-yr fixed, ARM, FHA, VA, jumbo), your credit score, down payment, points paid, loan amount, property state, and whether you're purchasing or refinancing. The calculator above uses a representative market rate for payment estimates — your actual rate will vary.

For a personalized rate comparison, use the tool below to see lenders ranked by APR, loan type, and your profile.

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30-yr fixed · 15-yr fixed · FHA · VA · ARM — ranked by APR

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Mortgage rates shown on SwitchWize compare pages include loan type, assumed FICO, LTV, and points. Representative only — verify all terms directly with the lender. Advertising disclosure

Frequently Asked Questions

Everything you need to know.

What does the Mortgage Prepayment Savings Calculator show?

Estimate how recurring extra principal payments may shorten a fixed-rate mortgage and reduce interest.

How should I use the result?

Use the result as a planning and comparison aid. Review the assumptions, adjust your inputs, and compare the output with your actual options before acting.

What should I do after using this calculator?

Use the related links and next-action modules on the page to compare products, continue in Money Map, or review related guidance on SwitchWize.

Is the Mortgage Prepayment Savings Calculator free to use?

Yes. SwitchWize calculators are free, and you do not need an account to run scenarios or view the result.

Does using the Mortgage Prepayment Savings Calculator affect my credit score?

No. Using a calculator does not trigger a credit check. A credit impact can occur only if you apply directly with a lender, card issuer, or provider.

Are the results personalized financial advice?

No. Calculator outputs are educational estimates based on the inputs you enter. Review assumptions and confirm terms directly with providers before making a financial decision.

What should I do after seeing the result?

Use the recommendation module on this page to compare mortgage lenders, or run Money Map to compare this home & mortgage decision with your other opportunities.

How does SwitchWize choose related offers?

Related offers are matched by the calculator surface (mortgage) and ranked using SwitchWize data such as rate, fees, trust signals, product fit, and switching friction. Paid relationships do not change organic ranking order.

How fresh are the rates and offers shown?

Rate and offer data is reviewed on a recurring cadence and every offer module shows review context or links to the methodology and disclosure pages.

Where can I see the ranking methodology?

The SwitchWize methodology page explains how rate freshness, editorial review, affiliate disclosure, and category ranking factors work.

Can Money Map use this result?

Yes. Money Map is the broader diagnostic path: it compares savings, mortgage, cards, and debt so you can see whether this calculator result is your highest-impact next move.