PMI Calculator — Private Mortgage Insurance Cost
Find out how much Private Mortgage Insurance (PMI) adds to your monthly mortgage payment, how long you will pay it, and how much extra down payment would skip it entirely.
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Added to your monthly mortgage payment until LTV reaches 80%
- 1
贷款金额
350,000 − 35,000 = 315,000 - 2
Loan-to-value (LTV)
315,000 ÷ 350,000 × 100 = 90% - 3
Annual PMI
315,000 × 0.85% ÷ 100 = 2,677.5PMI applies because LTV exceeds 80%. - 4
Monthly PMI
2,677.5 ÷ 12 = 223.13
这个计算器是如何工作的？
PMI costs roughly 0.5%–1.5% of your loan per year when LTV exceeds 80% (down payment under 20%). Monthly PMI = Loan × PMI Rate ÷ 12. It cancels when amortised balance falls to 80% of home value. Enter your figures to see the exact cost, timeline and how much extra down payment would skip it.
公式
How this is calculated
Private Mortgage Insurance protects the lender — not you — if you default on the loan. US lenders typically require it when the down payment is less than 20% of the purchase price, meaning the loan-to-value (LTV) ratio exceeds 80%. PMI is priced as an annual percentage of the outstanding loan balance, typically ranging from 0.5% to 1.5% depending on credit score, loan type and lender; the editable default of 0.85% reflects a 2025 industry average for a conventional 30-year loan with 10% down and good credit.
The monthly PMI amount is Loan × PMI Rate ÷ 12. To find when PMI drops, the calculator steps through the full amortisation schedule — using your interest rate and term — and counts the months until the balance falls to 80% of the original home value. That is the point at which you can request cancellation under the US Homeowners Protection Act; lenders must cancel automatically at 78%. Total PMI paid is the monthly amount multiplied by those months.
PMI rates are lender- and credit-score-dependent; treat the default as a 2025 illustrative estimate. FHA loans carry a Mortgage Insurance Premium (MIP) that often lasts the life of the loan — the calculation method is the same but the rules differ. VA and USDA loans have no PMI.
常见问题
Under the US Homeowners Protection Act, lenders must automatically cancel PMI when the scheduled amortised balance reaches 78% of the original purchase price. You can request cancellation earlier, at 80%, with a good payment history. FHA MIP rules are different and often require MIP for the full loan term.
PMI deductibility has been extended and lapsed at various times by Congress. For the current tax year, consult a tax adviser or IRS guidance — it has not been a permanent provision, and eligibility depends on income and loan origination date.
Put down at least 20% at closing; use a piggyback (80-10-10) loan structure; or accept lender-paid PMI (LPMI), where the cost is embedded in a slightly higher interest rate. VA loans (eligible veterans) and some USDA rural loans have no PMI requirement at all.
也称为
TG we-Calculate Editorial Team. (2026). PMI Calculator — Private Mortgage Insurance Cost [Online calculator]. TG we-Calculate. https://we-calculate.com/zh/calculator/pmi-calculator
TG we-Calculate Editorial Team. "PMI Calculator — Private Mortgage Insurance Cost." TG we-Calculate. 2026. https://we-calculate.com/zh/calculator/pmi-calculator.
TG we-Calculate Editorial Team, "PMI Calculator — Private Mortgage Insurance Cost," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/zh/calculator/pmi-calculator
@misc{wecalculate_pmi_calculator, title = {PMI Calculator — Private Mortgage Insurance Cost}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/zh/calculator/pmi-calculator}}, year = {2026}, note = {TG we-Calculate} }
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