Fannie Mae Mortgage Calculator review
A free web calculator with payment breakdowns plus separate affordability and refinance tools.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
Fannie Mae Mortgage Calculator is a free web tool for people estimating the costs of a home purchase. Enter a purchase price, down payment, loan term and interest rate to estimate a monthly payment. The result breaks out principal and interest, property taxes, homeowners and mortgage insurance, and HOA or condo fees. It is suited to prospective buyers who want a cost overview, rather than a loan decision: estimates are informational and do not indicate approval or financing.
The payment breakdown is the calculator’s most useful detail. Advanced View allows adjustments to property taxes, homeowners insurance, and HOA or condo fees, helping users explore how those costs affect the estimate. Mortgage insurance also appears in the breakdown. For a broader purchase budget, Fannie Mae offers a separate affordability calculator that estimates a maximum home price using income, debts, down payment and interest rate. These tools support related questions, but affordability analysis is not a mode within the mortgage calculator itself.
A separate refinance calculator estimates new payments and potential monthly and annual savings, making the set useful for both purchase planning and refinance comparisons. The tools are web-based, with no paid tier to compare. The published functionality focuses on estimates and cost inputs; amortization schedules and adjustable-rate mortgage modeling are not documented. Choose this calculator if you want a free payment breakdown alongside separate affordability and refinance estimates. Look elsewhere if your decision depends on those specific modeling features or requires an indication of financing approval.
Fannie Mae Mortgage Calculator pros and cons
- Where it wins
- Breaks payments into principal, interest, taxes, insurance and HOA fees
- Advanced View lets users adjust taxes, homeowners insurance and HOA fees
- Separate calculators estimate affordability and potential refinance savings
- Where it doesn't
- Affordability and refinance are separate tools, not calculator modes
- Estimates do not indicate mortgage approval or financing
- Amortization schedules and adjustable-rate mortgage modeling are not documented
Fannie Mae Mortgage Calculator fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update