Buying a home is the largest financial decision most people ever make, and the numbers behind it are too often explained in jargon or hidden inside a lender's sales funnel. MortgageAfford exists to put that math in plain language, so you can walk into the process already knowing what you can comfortably afford.
The calculators handle the decisions that come up around a mortgage and the household budget surrounding it. What you can afford based on your income and existing debts. What the monthly payment looks like and how long the loan really runs. Whether refinancing pays for itself before you would sell. What closing costs to expect. How much you can borrow against your equity, and whether renting still beats buying in your situation. Alongside those sit the personal-finance tools that decide whether a mortgage is comfortable at all: debt payoff, student loans, life insurance needs, and a full monthly budget.
The guides work the other direction. Instead of returning a figure, they explain the rule underneath it, including what the 28/36 rule is actually protecting against, how avalanche and snowball debt payoff really compare, when refinancing makes sense, and how home equity loans, HELOCs, and cash-out refinances differ in cost and risk.
The calculators here are built on the standards lenders and regulators actually use. Affordability follows the 28/36 debt-to-income rule that underwriters apply. The life-insurance tool uses the DIME method. Refinance decisions use a straightforward break-even calculation, and home-equity borrowing respects the common 80 percent loan-to-value cap. Where a figure comes from an authority such as the Consumer Financial Protection Bureau or Freddie Mac, we say so and point you to the source.
Naming the rule matters, because it lets you verify the answer and understand when it does not apply. The 28/36 guideline is a lending convention, not a law, and lenders routinely approve outside it for borrowers with strong credit or large reserves. Guides say when a number is a convention rather than a requirement instead of presenting it as fixed.
A calculator works from the figures you give it. It cannot see your credit score, your employment history, your local property taxes and insurance, the loan products a particular lender offers, or how underwriting will treat an unusual income. Every result here is an estimate meant to prepare you for a conversation, not to replace one.
That gap is widest on affordability. What a formula says you can carry and what you should actually borrow are different questions, and the second one depends on job stability, savings, and how much financial breathing room lets you sleep at night. Treat the output as a ceiling to think below, not a target to reach.
Nothing here requires an account, and the calculators run in your browser without storing what you type. The site stays free through advertising, which covers hosting and the research behind the tools. Advertising does not shape the results. There are no lender referrals, no rate-quote handoffs, and no product recommendations tied to a commission, which is exactly why a calculator here can tell you that refinancing is not worth it.
MortgageAfford is researched and edited by Dana Whitfield, who researches home-affordability, mortgage, and personal-finance math and explains it in plain language, citing primary sources such as the Consumer Financial Protection Bureau, Freddie Mac, and lender underwriting standards. Corrections and requests for a new calculator are welcome on the contact page, and including the inputs you used makes an error much faster to track down.
Dana is not a licensed financial advisor, mortgage broker, or tax professional; MortgageAfford's calculators produce educational estimates, not personalized financial advice. Confirm any figure that matters with a qualified professional and with your actual lender before you act on it.