After-Tax Cost of Debt Calculator
Calculate the after-tax cost of debt including tax shield savings, effective interest rates, and lifetime interest analysis for corporate and personal debt.
Mortgage Calculator with Taxes & Insurance
Calculate your full monthly mortgage payment including principal, interest, property tax, homeowners insurance, PMI, HOA fees, and tax deduction estimates.
SALT, charitable, medical, etc.
Total Monthly Payment⧉
$2,667.18
P&I + tax + insurance + HOA + PMI
Principal & Interest⧉
$2,075.51
Loan payment only
Property Tax⧉
$416.67
1.25% annual rate
Insurance⧉
$175.00
Homeowners insurance
Tax Savings (Year 1)⧉
$3,864.00
Standard deduction more beneficial
Effective Monthly Cost⧉
$2,345.18
Monthly payment minus estimated tax benefit
DTI Ratio⧉
32.0%
✅ Within typical limits
Total Interest (Life)⧉
$427,185.01
Over 30-year term
Loan-to-Value⧉
80.0%
No PMI needed
Monthly Payment Breakdown
| Year | Principal | Interest | Remaining Balance |
|---|---|---|---|
| 1 | $3,410.39 | $21,495.77 | $316,589.61 |
| 2 | $3,647.85 | $21,258.31 | $312,941.75 |
| 3 | $3,901.84 | $21,004.32 | $309,039.91 |
| 4 | $4,173.52 | $20,732.64 | $304,866.39 |
| 5 | $4,464.12 | $20,442.05 | $300,402.27 |
| 6 | $4,774.94 | $20,131.22 | $295,627.33 |
| 7 | $5,107.41 | $19,798.75 | $290,519.91 |
| 8 | $5,463.03 | $19,443.14 | $285,056.88 |
| 9 | $5,843.41 | $19,062.76 | $279,213.47 |
| 10 | $6,250.28 | $18,655.89 | $272,963.20 |
| 15 | $8,751.10 | $16,155.06 | $234,545.34 |
| 20 | $12,252.55 | $12,653.62 | $180,755.93 |
| 25 | $17,154.98 | $7,751.19 | $105,444.56 |
| 30 | $24,018.94 | $887.22 | $0.00 |
Federal tax savings use 2026 standard deduction and bracket assumptions for planning only. This is not a full tax return.
Planning notes, formulas, and examples
About the Mortgage Calculator with Taxes & Insurance
Your actual monthly mortgage payment is much more than just principal and interest. The full PITI payment includes Property Tax, Insurance, and potentially PMI (Private Mortgage Insurance) and HOA fees. These additional costs can add 30-50% on top of the base P&I payment, and many first-time homebuyers are surprised by the difference.
Understanding the true cost of homeownership also requires factoring in the mortgage interest tax deduction. For homeowners who itemize, the ability to deduct mortgage interest, property taxes, and other itemized deductions can reduce the effective monthly cost significantly — though the standard deduction is high enough that many homeowners still benefit more from taking the standard deduction.
This comprehensive PITI calculator models every component of your monthly housing payment, computes a planning estimate for the tax benefit of itemizing, calculates your DTI (debt-to-income) ratio for qualification purposes, and provides an amortization schedule showing how your equity builds over time. It is not a full tax return and does not model every federal deduction or credit.
When This Page Helps
A mortgage payment includes more than principal and interest. This calculator shows the full monthly housing cost, including taxes, insurance, PMI, and HOA fees, so you can compare homes, estimate affordability, and see how tax deductions change the effective payment. The tax section is a planning estimate based on the standard deduction and the itemized deductions you enter, not a substitute for a full return.
How to Use the Inputs
- Enter the home purchase price and your down payment amount
- Set the mortgage interest rate and choose your loan term
- Enter your local property tax rate (check county assessor)
- Add monthly homeowners insurance and any HOA fees
- Enter your household income and filing status for tax deduction analysis
- Add any other itemized deductions you expect to claim for the year
- Review total monthly payment, tax savings, and amortization schedule
Formula used
Monthly P&I = L × [r(1+r)^n] / [(1+r)^n − 1]
where L = loan amount, r = monthly rate, n = total months
Monthly Property Tax = Home Price × Tax Rate / 12
Monthly PMI = Loan × PMI Rate / 12 (if LTV > 80%)
Total PITI = P&I + Property Tax + Insurance + PMI + HOA
Tax deduction estimate = max(0, mortgage interest + property tax + other itemized deductions − standard deduction) × marginal tax rateExample Calculation
Result: $3,315/month total PITI
On a $400K loan at 6.75%: P&I is about $2,595, property tax is about $521/mo, insurance is $200/mo, and there is no PMI with 20% down, for roughly $3,315/month of housing cost before tax effects. With $10,000 in other itemized deductions and the applicable standard deduction, total itemized deductions are about $43,250. That is roughly $11,050 above the standard deduction, which can create about $2,431 of tax savings at a 22% marginal rate. The result is still a planning estimate, not a full federal return.
Tips & Best Practices
- Put 20% down to avoid PMI — it can save $100-400/month on typical loans
- Property tax rates vary dramatically by location — verify with the county assessor
- Shop homeowners insurance annually — rates can vary 2-3x between carriers
- Many homeowners benefit more from the standard deduction than itemizing with mortgage interest
- Keep DTI below 36% for the best mortgage rates and terms
Affordability Check
Use the full PITI figure when comparing loan offers or deciding how much house you can comfortably support each month.
Tax and Escrow
Property tax, insurance, PMI, and escrow requirements can move the payment a lot more than small rate changes. Review the local tax bill and your loan estimate before treating the payment as final.
Sources & Methodology
Last updated:
Methodology
This page calculates principal-and-interest from the loan amount, rate, and term, then adds property tax, homeowners insurance, PMI, and HOA fees to build a monthly PITI-style housing cost. It also estimates a simple first-year tax benefit by comparing mortgage interest plus property tax plus other entered itemized deductions against the 2026 standard deduction for the selected filing status, then applying the user's marginal bracket to the excess itemized amount.
The page is a planning worksheet, not a full tax return or loan estimate. It does not model every mortgage cost, every itemized-deduction limitation, or every state and local housing rule, so the result should be treated as a directional estimate only.
Sources
- Publication 936 (2025), Home Mortgage Interest Deduction (Internal Revenue Service) — IRS guidance for deductible mortgage interest, points, and the debt-limit framework.
- What is PITI? (Consumer Financial Protection Bureau) — CFPB explanation of principal, interest, taxes, and insurance in a monthly mortgage payment.
- What is private mortgage insurance? (Consumer Financial Protection Bureau) — CFPB explanation of PMI and when it is typically required for down payments below 20%.
- What is an escrow or impound account? (Consumer Financial Protection Bureau) — CFPB explanation of escrow treatment for property taxes and insurance.
- Revenue Procedure 2025-32 (Internal Revenue Service) — Official 2026 standard-deduction amounts used in the tax-savings comparison.
Frequently Asked Questions
PITI stands for Principal, Interest, Taxes, and Insurance — the four components of a typical monthly mortgage payment. Lenders use PITI to calculate your DTI ratio for qualification.
Private Mortgage Insurance is required when your down payment is less than 20% (LTV > 80%). It typically costs 0.3-1.5% of the loan annually and can be removed once LTV reaches 78-80%.
Yes, up to the applicable mortgage-debt limit ($375K if married filing separately under the current rule set). However, you must itemize deductions — if your standard deduction is higher, the mortgage interest deduction provides no additional benefit.
The standard deduction depends on filing status and tax year. You only get a benefit from the mortgage interest deduction if your itemized deductions exceed the amount that applies to your return.
Most conventional loans require a DTI under 43%, though some programs accept up to 50%. FHA loans allow up to 57% in some cases. Lower DTI gives you better rates and more choices.
If you have an escrow account (required for most loans with < 20% down), yes — your lender collects property tax monthly and pays it when due. Otherwise you pay taxes separately.
Budget 1-3% of home value annually for maintenance and repairs. So a $400K home needs $4,000-12,000/year in maintenance plus any utility differences from your previous housing.
More in this topic
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Alabama Tax Calculator
Calculate Alabama state income tax with current state brackets, the Alabama standard deduction chart, personal and dependent exemptions, the federal tax deduction, and optional local tax.