Which calculator should I start with?

If you're still figuring out what you can spend, start with the affordability calculator — it works backward from your income and debts to a practical price range. If you already have a price in mind, start with the payment calculator to see the full monthly cost.

Are these calculators free and do they require signing up?

Yes — every calculator on this page is free to use and shows your results immediately, with no account, email, or credit check required to see the numbers.

Do these calculators use 4Homes' current advertised interest rates?

No. Each calculator lets you enter your own rate assumption so you can test different scenarios. 4Homes' published rates, shown with APR equally prominent, live on the dedicated mortgage rates pages.

How accurate are the results?

These tools give planning-grade estimates based on the numbers you enter — they're useful for comparing scenarios and narrowing your range, but they're not a loan approval, a commitment to lend, a rate lock, or a Loan Estimate. Actual figures depend on underwriting, your credit profile, and the specific property.

Can I use more than one calculator for the same home purchase?

Yes, and it's a good idea. A typical flow is affordability, then payment for a specific price, then closing costs and down payment to plan your total cash needed, then DTI or pre-approval to sanity-check the whole picture before you talk to a lender.

What are you trying to figure out?

Pick the question that is closest to yours. Every tool shows the estimate first—no account, address, or credit check required.

Buying a home

What can I buy?

Work backward from your budget, cash, or target payment.

Monthly paymentEstimate principal, interest, taxes, insurance, and PMI.How much can I afford?Turn income, debts, and cash into a practical price range.Pre-approval scenarioModel a likely maximum loan before a formal pre-approval.Down paymentCompare cash needed and payment tradeoffs at different down payments.Closing costsEstimate the cash that may be due beyond the down payment.Rent vs. buyCompare the longer-term cost of renting and owning.Debt-to-incomeSee where your current monthly obligations put your DTI.

Using home equity

What can my equity do?

Compare the cost of keeping or replacing your current mortgage.

Home-equity optionsEstimate accessible equity and compare a HELOC with cash-out refinancing.HELOC paymentModel interest-only and later repayment payments on a credit line.Cash-out refinanceEstimate available cash and the resulting new mortgage payment.

Improving a mortgage

Is a new structure worth it?

Test whether a new structure creates real savings.

Refinance break-evenCompare payment, total cost, and the time needed to recover closing costs.15-year vs. 30-yearCompare payment pressure with lifetime interest savings.Extra paymentsSee how additional principal changes payoff time and interest.

Specialized scenarios

Does my scenario pencil?

Run program-specific or investment-property numbers.

Investment cash flowStress-test rent, expenses, cash flow, cap rate, and DSCR.Jumbo affordabilityEstimate a high-balance purchase range from income and reserves.FHA mortgage insuranceEstimate upfront and monthly FHA mortgage insurance.VA funding feeEstimate the VA funding fee by use and down payment.

Calculator results are estimates for planning, not a loan approval, commitment, rate lock, or Loan Estimate.

How to choose the right calculator

The 17 tools on this page are grouped into four questions, not four categories of math. Start with whichever question matches where you actually are in the process, rather than picking a calculator by name.

Buying a home.If you haven’t settled on a price yet, the affordability calculator works backward from your income and debts to a realistic range. Once you have a price, the payment calculator shows the full monthly cost, and down payment and closing costs calculators show the cash you’d need upfront. DTI checks where your existing debt leaves you before you shop.

Using home equity.If you already own and want to tap equity without disturbing your current mortgage, the HELOC payment calculator shows draw and repayment payments. If you’d rather roll everything into one new loan, the cash-out refinance calculator shows the cash available and the resulting payment.

Improving a mortgage. The refinance calculator answers whether a new rate or term is actually worth the closing costs, using a break-even timeline. The 15-vs-30 calculator and extra payment calculator both explore paying a loan off faster — one by committing to a shorter term, the other by keeping flexibility and adding principal voluntarily.

Specialized scenarios.Jumbo affordability, FHA MIP, VA funding fee, and investment property cash flow each model the specific mechanics of a loan program or property type that the general-purpose calculators don’t capture.

A typical calculator sequence

1Start with affordability to get a realistic price range from your income, debts, and down payment.
2Run the payment calculator on a specific price to see the full monthly cost — principal, interest, tax, insurance, and PMI or HOA if they apply.
3Check closing costs and down payment together to see the total cash you'd need at the table, not just the down payment alone.
4Run DTI or pre-approval to sanity-check the whole picture against lender guideline ratios before you talk to anyone.
5If you already own, use rent vs. buy, HELOC payment, cash-out refinance, or the refinance break-even calculator depending on the specific question you're weighing.

What these calculators don’t do

None of these tools pull your credit, verify your income, or check a specific property’s appraisal. They use the numbers you enter to produce a planning estimate, not an approval. A few calculators — payment, affordability, jumbo affordability, and others — let you enter your own interest rate assumption to test scenarios; they don’t pull 4Homes’ live advertised rate. 4Homes’ published rates, shown with APR equally prominent, live on the dedicated mortgage rates pages.

For a real number you can act on, the next step after a calculator is usually a conversation with a loan specialist who can review your actual documentation and the specific property.

Related guides

Frequently asked questions

Which calculator should I start with?: If you're still figuring out what you can spend, start with the affordability calculator — it works backward from your income and debts to a practical price range. If you already have a price in mind, start with the payment calculator to see the full monthly cost.
Are these calculators free and do they require signing up?: Yes — every calculator on this page is free to use and shows your results immediately, with no account, email, or credit check required to see the numbers.
Do these calculators use 4Homes' current advertised interest rates?: No. Each calculator lets you enter your own rate assumption so you can test different scenarios. 4Homes' published rates, shown with APR equally prominent, live on the dedicated mortgage rates pages.
How accurate are the results?: These tools give planning-grade estimates based on the numbers you enter — they're useful for comparing scenarios and narrowing your range, but they're not a loan approval, a commitment to lend, a rate lock, or a Loan Estimate. Actual figures depend on underwriting, your credit profile, and the specific property.
Can I use more than one calculator for the same home purchase?: Yes, and it's a good idea. A typical flow is affordability, then payment for a specific price, then closing costs and down payment to plan your total cash needed, then DTI or pre-approval to sanity-check the whole picture before you talk to a lender.