CalcAtlas

Loan Calculator & Advanced Mortgage Planner

Estimate your monthly payment, total interest and payoff time, then explore advanced strategies like extra payments, recasting, refinancing and ARM projections — all on one page.

Plan your loan like a pro.

Start with a simple payment estimate, then explore extra payments, refinancing, recasting and ARM scenarios without leaving this page.

This extra principal is applied every month in all advanced scenarios.

💰Monthly payment:$2,462.87Estimated payoff:30 yr🔥Total interest:$486,632.77📊Total paid:$886,632.77

Amortization preview (first 12 months)

Export full schedule via CSV & PDF (coming soon)
MonthPaymentPrincipalInterestBalance
1$2,462.87$379.54$2,083.33$399,620.46
2$2,462.87$381.51$2,081.36$399,238.95
3$2,462.87$383.50$2,079.37$398,855.45
4$2,462.87$385.50$2,077.37$398,469.96
5$2,462.87$387.50$2,075.36$398,082.45
6$2,462.87$389.52$2,073.35$397,692.93
7$2,462.87$391.55$2,071.32$397,301.38
8$2,462.87$393.59$2,069.28$396,907.79
9$2,462.87$395.64$2,067.23$396,512.15
10$2,462.87$397.70$2,065.17$396,114.44
11$2,462.87$399.77$2,063.10$395,714.67
12$2,462.87$401.85$2,061.01$395,312.82

✨ Advanced loan tools

Explore payoff strategies, refinancing, recasting & ARMs.

Run what-if scenarios to see how extra payments, refinancing or switching to an ARM impact your payoff date, monthly payments and total interest.

💵Extra payments
🔁Refinance analysis
🎯Recast simulator
📉ARM projection

Extra Payments Pro

Combine recurring extra payments with a one-time lump sum to see how much faster you can be debt-free.

Save $82,857.09 interestPay off 3 yr 5 mo earlier

No recurring extra payment is set above.

For example, a bonus, tax refund or equity payout.

Earlier in the loan generally yields more interest savings.

Balance with vs. without extra payments

Charts & visual insights

See how your loan balance changes over time and how different strategies impact your payoff curve. Toggle scenarios in the Advanced Tools panels above, then use these charts to visualize the difference.

Balance over time

Compare two loan scenarios

Compare your current scenario on this page (Loan A) against an alternative loan (Loan B) with a different rate and term.

Loan A (current)

Rate: 6.25%
Term: 30 years

Payment: $2,462.87
Interest: $486,632.77

e.g. a future refinance or alternative offer.

Loan B snapshot

Payment: $2,334.29

Interest: $440,344.91

Payment difference: -$128.58 /mo
Interest difference: -$46,287.86

Balance: Loan A vs Loan B