Amortization Calculator
Full payoff schedule with principal vs interest, charts, extra payments, and PDF/CSV export.
Calculator
Optional — added to principal each month
- Loan amount
- $320,000.00
- Total interest (with extra)
- $408,142.36
- Total interest (no extra)
- $408,142.36
- Interest saved
- $0.00
- Payoff in
- 30y 0m
- Months saved
- 0
Open the dedicated Amortization page for the full payoff schedule, charts, and exports.
What's next?
Refine your numbers, compare options, or explore the next step in your plan.
Tip: sign in to save unlimited scenarios and track your plans over time — free.
Smart insights
Personalized takeaways based on the numbers you entered.
- Paying just $100 extra each month could save you about $61,698 in interest over the life of the loan.
- Switching to a 15-year loan would reduce total interest by about $226,385 — at a higher monthly payment.
AI financial insights
Personalized, plain-English guidance generated from your numbers.
What this means for your plan
Plain-English trade-offs to help you decide with confidence.
- Long-term vs. short-term
A 30-year loan keeps payments low but costs far more in interest. A 15-year loan flips that trade-off — higher monthly payment, much less interest.
- Rate-sensitive plan
At this rate, prepayments and refinances have outsized impact. Revisit your refinance plan if rates drop even half a point.
- Money freed up = money invested
Every dollar you save here can be redirected into long-term investing. The earlier you reroute it, the larger the compounded result.
Your planning path
A guided sequence so each tool builds on the last.
Learn the why behind your result
Short, plain-English lessons related to this calculation.
Helpful financial resources
Tools that may support the planning behind your amortization calculator — picked for context, not promotion.
- Budgeting WorkspacePartnerCategorises income and expenses across accounts.Helpful for users who want a clearer monthly cash-flow picture.
- High-Yield Savings AccountPartnerAn interest-bearing account for short-term savings.Useful when building an emergency fund or holding cash you'll need within 1–3 years.
Some resources are partner links that may support the platform at no extra cost to you. All recommendations are educational in nature. Learn how we choose them.
Recommended next steps
Tools that pair naturally with this calculation.
Compare scenarios
See how different terms, rates, or contributions change the outcome — side by side.
How it works
The amortization calculator uses a standard formula refined for clarity and precision. Results update live as you change any input — try different scenarios to see how sensitive the answer is to each assumption.
Tips for accurate results
- Use realistic, current values — don't round aggressively for inputs that matter.
- Compare a few scenarios to see how sensitive the result is to your assumptions.
- Save your results so you can track changes over time as your situation evolves.