Mortgage modeling for smarter decisions

Free tools to model mortgages, check what you can afford, and see exactly how extra payments, refinances, and rate changes affect your bottom line.

For credit unions, banks & mortgage teams — embed on your site

Everything you need to plan your mortgage

Quickstart

Already know your situation? Jump straight into the modeler, preloaded and explained for a specific scenario.

Built for real planning, not just quick estimates

Every Payment, Mapped Out

Full amortization schedules showing principal, interest, equity, and balance — month by month, for the life of your loan.

Change Anything, See It Instantly

Adjust your rate, add extra payments, switch loan terms — results update in real time so you can explore without guessing.

What If I Refinanced? Paid It Down? Recast?

The What-If Lab lets you test refinances, paydowns, lump-sum payoffs, recasts, and cash-out refis — without changing your saved scenarios.

Example: Extra Payment Impact
Base Loan$400,000 @ 6.5%
Extra Payment+$200/month
Time Saved4 years, 7 months
Interest Saved$78,432
Try it with your numbers →

Ready to model your mortgage?

No signup required — start building scenarios immediately. Create a free account to save your work and sync across devices.

Launch Mortgage Modeler

We value your privacy

We use Google Analytics to understand site usage. Accept to enable standard analytics cookies. Decline to prevent cookies; limited usage signals will still be sent to Google (no financial inputs). All calculator inputs stay in your browser unless you sign in to save them. Privacy PolicyCookie Policy