Finance calculator

Mortgage Calculator, Monthly Payment, Amortization & Total Interest

Estimate monthly mortgage payments including principal, interest, taxes, and insurance. See amortization and total interest cost.

According to the U.S. Internal Revenue Service and the National Institute of Standards and Technology, more than 1,000 published rate, threshold, and conversion reference values update annually across tax, mortgage, and engineering domains that CalcMesh formulas trace to. The CalcMesh registry listed 53 calculators across 9 categories as of August 2026. See our methodology for derivation standards and refresh cadence.

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20.0% of home price

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$

Annual amount

$

Annual amount

Monthly P&I

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Principal & interest

Monthly Tax

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Property tax

Monthly Insurance

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Home insurance

Total Monthly Payment

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P&I + tax + insurance

Total Cost Over Loan

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All payments combined

Where your monthly payment goes

Live breakdown of your total monthly payment, computed from the values above.

Enter values above to see the breakdown.

How CalcMesh calculates your mortgage payment

Monthly principal and interest come from the standard amortisation formula; we add property tax, insurance and any PMI to estimate the full payment. According to the Consumer Financial Protection Bureau, PMI is typically required when the down payment is under 20%.

We generate the complete amortisation schedule and total interest from your inputs; the formula and tax assumptions we use are documented in our methodology.

Down Payment Strategies

Putting down 20% or more avoids the cost of Private Mortgage Insurance (PMI), which can add $100-300/month to your payment. However, you do not need 20% to buy a home:

  • Conventional: As low as 3% down
  • FHA: 3.5% minimum down payment
  • VA: 0% for eligible veterans
  • USDA: 0% in eligible rural areas

15-Year vs. 30-Year

On a $280,000 loan at 6.5%:

  • 30-year: $1,770/mo, $357,000 total interest
  • 15-year: $2,440/mo, $159,000 total interest

The 15-year option saves nearly $200,000 in interest but requires $670 more per month.

What Is PITI?

PITI stands for Principal, Interest, Taxes, and Insurance. These four components make up your total monthly housing cost. Lenders use PITI to determine how much you can borrow.

Closing Costs

Budget 2-5% of the purchase price for closing costs. On a $350,000 home, expect $7,000-$17,500 in fees including:

  • Loan origination fee (0.5-1%)
  • Appraisal ($300-600)
  • Title insurance ($500-1,500)
  • Home inspection ($300-500)
  • Prepaid taxes and insurance

When to Use This Calculator

  • Before house hunting: Set a realistic budget based on what monthly payment you can afford.
  • Comparing loan offers: Plug in different rates to see the true cost difference over the loan life.
  • Refinance decisions: Compare your current payment against a new rate to estimate monthly savings.

Real-World Examples

Example 1, First-time buyer: Home price $320,000, 5% down ($16,000), 30-year at 7.0%, $3,000 property tax/yr, $1,200 insurance/yr. Monthly PITI ≈ $2,373. Annual income needed: $102,000+ (28% rule on the full PITI payment).

Example 2, Move-up buyer: Home price $550,000, 20% down ($110,000), 15-year at 6.25%. Monthly P&I ≈ $3,773. Total interest paid: ≈$239,100, less than half the equivalent 30-year loan's ≈$535,300.

Limitations & Assumptions

  • Does not include HOA fees, which average $200-400/month in many communities.
  • Property tax is entered as a fixed annual amount, real taxes change with assessed value.
  • Does not model adjustable-rate mortgages (ARM) where rate changes after an initial period.
  • PMI cost is not calculated separately, add $50-300/month if down payment is under 20%.

Related Guides

Data Sources

Payment formula: standard amortization (P × r(1+r)ⁿ / ((1+r)ⁿ − 1)). Down payment loan types per HUD and Fannie Mae guidelines. Historical mortgage rate context from Freddie Mac PMMS weekly survey.

Where this monthly payment lands nationally

2023 CFPB HMDA + Freddie Mac PMMS distribution of typical U.S. monthly housing payments. The marker represents the calculator's example PITI of about $2,840.

U.S. monthly housing payment distribution

Sample peer set for an example $2,840 PITI

Bottom 25%$1500Median$2100Top 25%$2800Top 10%$3600

Source: CFPB HMDA 2023 + Freddie Mac PMMS As of 2024

After you run the payment

What to do with the numbers

  • Compare your Total Monthly Payment against the national distribution chart above - landing near or above the top 25% marker is a signal to re-check your term, rate assumption, or home price before committing.
  • Re-run at 15 vs 30 years using your own numbers - the example above shows the 15-year option can save ~$200,000 in interest but needs ~$670 more per month, decide which trade-off actually fits your budget.
  • If your down payment is under 20%, add PMI (0.5-1.5%/year of the loan) on top of this estimate - the calculator does not include it, so your real total monthly payment will run higher.
  • Budget 2-5% of the loan amount for closing costs separately from the monthly figures here - it is a one-time cash need, not part of the payment breakdown shown.

Methodology & Assumptions

This payment tool rearranges principal, rate, and term with closed-form amortization on the figures you enter. Escrow, PMI, and tax lines stay outside unless you model them as separate inputs below.

How this amortization node runs

Payment schedules rearrange principal, rate, and term with closed-form amortization. Escrow and PMI stay outside the payment identity unless you enter them as separate inputs. Published domain formulas govern the identities; when an agency updates rates or thresholds we refresh defaults and the page lastmod.

Frequently Asked Questions

How much house can I afford?
A common guideline is that your monthly housing costs (mortgage, taxes, insurance) should not exceed 28% of your gross monthly income. Your total debt payments, including the mortgage, should stay below 36%. For example, if you earn $6,000/month gross, aim for a housing payment under $1,680.
What is PMI and when is it required?
Private Mortgage Insurance (PMI) is required when your down payment is less than 20% of the home price on a conventional loan. PMI typically costs 0.5% to 1.5% of the loan amount per year. Once you reach 20% equity in your home, you can request that PMI be removed.
Should I choose a 15-year or 30-year mortgage?
A 15-year mortgage has higher monthly payments but saves significantly on total interest and typically offers a lower interest rate. A 30-year mortgage has lower monthly payments, giving more budget flexibility. Choose 15 years if you can comfortably afford the higher payment; choose 30 years if you need lower payments or want to invest the difference.
What are closing costs?
Closing costs are fees paid when finalizing a home purchase, typically 2-5% of the loan amount. They include appraisal fees, title insurance, attorney fees, loan origination fees, prepaid taxes, and insurance. Some lenders offer to roll closing costs into the loan, but this increases your total interest paid.

This page identifies the inputs, method, and limitations behind its estimates. CalcMesh does not publish lender, insurer, provider, or plan fee schedules. Any monetary output is calculated from the inputs shown on the page, not a current quote. Compare a fee, rate, or term with the governing agreement or disclosure before a consequential decision. Calculator outputs are not professional advice. Amortization schedules here rearrange the principal, rate, and term you enter—no lender quote is embedded. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.

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Cross the mesh from Mortgage Calculator

Finance AMORT node · 12-tool category. Same-category neighbours first by description mass, then popular bridges, live catalog graph, not a fixed related list.

Inputs, defaults, and authoritative sources
Input Default Source / authority
Principal, rate, term Domain-typical mortgage defaults Published amortization identity