True cost formula
Mortgage payment plus ownership costs, utilities, maintenance, and cash-flow pressure.
Mortgage calculator + house-poor reality check
True monthly mortgage cost calculator with utilities, maintenance, DTI, and leftover cash.
Calculate the payment lenders quote, then add the costs home buyers often miss: property tax, insurance, PMI, HOA, maintenance reserve, utilities, cash-to-close, and leftover monthly cash.
USD defaultGlobal currency labelsShareable scenariosCSV amortization
Quick answer: The true monthly cost of a mortgage includes principal, interest, taxes, insurance, PMI, HOA fees, utilities, maintenance reserve, and debt payments that affect cash flow. This calculator estimates those costs and flags whether the scenario may create house-poor pressure.
Buyer question
Built for the question buyers actually ask: can I afford the home after all bills?
House-poor risk
Uses all-in housing cost, income, other debt, expenses, and leftover cash to flag budget stress.
Clear planning answers
Includes direct answers, visible formulas, FAQs, examples, and related calculator links.
Mortgage formulas used
Monthly P&I = P × [r(1+r)^n] / [(1+r)^n − 1]
True monthly housing cost = P&I + taxes + insurance + PMI + HOA + maintenance reserve + utilities
Cash to close = down payment + estimated closing costs
Amortization preview
First 12 payments
CSV export includes the full schedule.
| Month | Payment | Principal | Interest | Balance |
|---|
Standard vs True Cost
What this calculator includes that standard mortgage calculators often miss
| Cost / feature | Standard calculator | True Cost Mortgage Calc |
|---|---|---|
| Principal and interest | Usually included | Included |
| Taxes and insurance | Sometimes included | Included |
| PMI and HOA | Sometimes included | Included |
| Utilities | Usually missing | Included |
| Maintenance reserve | Usually missing | Included |
| Leftover cash | Usually missing | Included |
| House-poor risk | Usually missing | Included |
| Scenario link and CSV | Varies | Included |
Topic hub
Guides built for clear mortgage planning
Mortgage Affordability Audit Checklist
Use a structured checklist to verify payment comfort, cash to close, reserves, and first-two-year risk.
Read guideWhat Is the True Monthly Cost of Owning a Home?
Learn which costs belong in a realistic homeownership budget beyond principal and interest.
Read guideHouse-Poor Calculator Guide
Understand how leftover cash, debts, utilities, and maintenance can change affordability.
Read guideMortgage Payment With Utilities
See why utility estimates should be included before deciding what payment is comfortable.
Read guideMortgage Payment With Maintenance Reserve
Plan for repairs and replacements before they become emergency debt.
Read guideMortgage Calculator With Closing Costs
Estimate the cash needed to close and the reserve left after moving in.
Read guideHow Much House Can I Afford After Bills?
Use household cash flow, not just lender approval, to test affordability.
Read guideFront-End DTI Explained
Learn what housing-cost-to-income ratio means and where it falls short.
Read guideBack-End DTI Explained
Compare total debt obligations with income and then check leftover cash.
Read guideFirst-Time Homebuyer Monthly Budget
Build a realistic monthly budget before making an offer.
Read guideMistakes Mortgage Calculators Miss
Review common assumptions that can make a home look too affordable.
Read guideCase studies
See how true monthly cost works in realistic scenarios
350k Home on 90k Income
Review how payment, utilities, maintenance, debts, and reserves affect affordability.
Read case studyEscrow Shock After Reassessment
See how tax and insurance changes can raise the second-year payment.
Read case studyRent vs Buy Seven-Year Plan
Compare renting and buying after utilities, maintenance, transaction costs, and selling costs.
Read case studyFAQ
Mortgage calculator questions
What is a house-poor mortgage payment?
A house-poor payment is a housing cost that leaves too little cash for savings, emergencies, and normal living expenses after the mortgage and ownership costs are paid.
Should utilities be included in mortgage affordability?
Yes. Utilities are recurring housing costs and can materially change how affordable a home feels after move-in.
How much should I budget for home maintenance?
A common planning range is about 1% of the home price per year, but actual costs vary by age, condition, location, and systems.
What is included in a full monthly mortgage payment?
A full monthly view should include principal, interest, property taxes, homeowners insurance, PMI, HOA fees, utilities, maintenance reserve, and other debts.
Is DTI based on gross income or net income?
Traditional lender DTI typically uses gross income. Personal cash-flow comfort should also consider take-home income and monthly living expenses.
What is a safe leftover cash amount after buying a house?
There is no universal number, but buyers should keep enough monthly cash for savings, emergencies, food, transportation, insurance, and irregular expenses.
Should I include HOA fees in my mortgage calculation?
Yes. HOA fees are recurring housing costs and can affect affordability even if they are not part of the principal and interest payment.
How do closing costs affect affordability?
Closing costs affect cash-to-close and may reduce emergency reserves. This can make an otherwise affordable payment more risky.
Why can lender approval be higher than my comfort budget?
A lender may focus on qualification ratios while your personal budget must include utilities, maintenance, lifestyle, savings goals, and unexpected repairs.
What is the difference between mortgage payment and true housing cost?
The mortgage payment usually means principal and interest, while true housing cost includes the total recurring ownership cost and cash-flow impact.
How to use the calculator before making an offer
Use the calculator as a decision screen before you fall in love with a price. Start with the home price you are considering, then enter a realistic down payment, rate, term, taxes, insurance, PMI, HOA dues, utilities, maintenance reserve, debts, net income, and normal living expenses. The most important result is not only the mortgage payment. The more useful number is the leftover cash after the full housing cost and monthly obligations are included.
Run at least three cases. First, run the price you hope to buy. Second, run a lower price that gives the household more breathing room. Third, run a stress case with a higher rate, higher taxes, higher insurance, and a larger maintenance reserve. If the target price only works in the optimistic case, the household may be relying on luck rather than a durable budget.
This approach is intentionally conservative. It does not tell a buyer to avoid homeownership. It helps the buyer see the tradeoff between purchase price, cash reserves, monthly flexibility, and future repairs. A home is usually easier to enjoy when the budget can survive normal surprises.
Homebuyer quality check before relying on any estimate
Before relying on a payment estimate, review whether each major assumption came from a real source or a rough guess. A useful estimate should be built from a quoted interest rate, realistic property tax assumption, property-specific insurance estimate, actual or estimated HOA dues, realistic utility costs, and a maintenance reserve that reflects the home’s age and condition. If several inputs are guesses, the result should be treated as a draft.
The strongest way to use the site is to move from rough assumptions to verified assumptions. Early in the process, the calculator can help screen whether a price range is worth exploring. As the purchase becomes more serious, replace rough numbers with the Loan Estimate, insurance quote, tax history, HOA documents, utility information, and inspection findings. This turns the calculator from a simple estimate into a practical affordability record.
The goal is not to produce the biggest possible approval number. The goal is to identify a purchase price that still leaves room for savings, maintenance, normal expenses, and unexpected costs. A home that only works when taxes, insurance, utilities, and maintenance are understated may not be a durable choice.