Tool · Refinance

Refinance Calculator

Estimate your new monthly payment, total closing costs, and the month your refinance breaks even — with property tax, insurance, PMI, and state-specific costs already factored in. Works for all 50 states and D.C.

Market context U.S. average mortgage rates, week of

30-yr fixed6.49% 15-yr fixed5.82%

Source: Freddie Mac Primary Mortgage Market Survey. Survey published every Thursday. We refresh these numbers weekly.

Your current loan

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Your property

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Select a state to load default property tax, insurance, and closing-cost values.

New loan terms

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Visualize your refinance

How your loan balance and cumulative savings play out over time. Both charts update live with the inputs above.

Loan balance over time

Both loans amortize to zero. Compare payoff trajectories.

Current New

A longer new term means the curve falls more slowly — you trade total interest for a smaller monthly payment.

Cumulative savings net of closing costs

When the curve crosses zero, your refinance has paid for itself.

Below zero Net savings

Stay past breakeven and the area above zero is your net financial benefit. Sell before that and the refinance loses money.

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How this calculator works

Transparent math, declared assumptions, and the limits of what the calculator can tell you.

Formula

Standard amortization: M = P · (r·(1+r)n) / ((1+r)n−1), where P is principal, r is monthly rate, n is months. Applied separately to the current and proposed loan.

PMI logic

For conventional loans above 80% LTV, monthly PMI is calculated from industry-typical rates banded by LTV (50–125 bps base) and adjusted by credit score. PMI auto-cancels at 78% LTV per the Homeowners Protection Act.

FHA & VA

FHA loans add UFMIP (1.75%, financed into the new balance) plus monthly MIP per the HUD Mortgagee Letter 2023-05 grid — bps depend on term, LTV, and whether the base loan exceeds the 2026 national conforming limit ($832,750). A separate toggle applies the FHA streamline carve-out for loans endorsed on or before May 31, 2009 (UFMIP 0.01%, annual MIP 0.55%). VA loans add a funding fee with a first-use / subsequent-use toggle; disabled veterans are exempt.

State defaults

Property tax, insurance, transfer/recording taxes, title insurance, and attorney requirement are loaded from a per-state table. Every value is overridable. Sources are listed under the calculator.

Limitations

Not applicable to adjustable-rate mortgages after reset, loans with prepayment penalties, negative-amortization or interest-only products, or second-lien subordination scenarios. Tax effects of refinancing are excluded — see our dedicated guide.

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Questions about this calculator

Does this calculator include property taxes, insurance, and PMI?

Yes. The calculator computes the full PITI total — principal and interest, property tax, homeowners insurance, plus PMI on conventional loans above 80% LTV or FHA MIP. HOA dues are a separate input. Property tax and insurance defaults are loaded by state and can be overridden with your actuals.

Where do the state defaults come from?

Property tax rates from the Tax Foundation's annual analysis and Census ACS data. Insurance baselines from the Insurance Information Institute and NAIC. Transfer and mortgage recording taxes from each state's revenue department. Title insurance from state insurance commissioners (where regulated) or industry surveys. Full source list is under the calculator.

How is breakeven calculated?

We divide your total closing costs (if paid out of pocket) by your monthly P&I savings. If you roll closing costs into the new loan, breakeven is reflected directly in the new monthly payment instead. Property tax, insurance, and HOA are excluded from the comparison because they don't change from refinancing alone.

Why does Texas show a cash-out warning?

The Texas constitution (Section 50(a)(6)) caps cash-out refinances at 80% loan-to-value. The calculator enforces this cap and warns you when a cash-out amount would push your new LTV above 80% — those refinances cannot close in Texas. The calculator suggests the maximum cash-out allowed in your scenario.

Does it handle FHA and VA refinances?

Yes. Selecting FHA adds the 1.75% upfront MIP (financed into the loan) plus monthly MIP per HUD Mortgagee Letter 2023-05 — bps vary by term, LTV, and whether your base loan exceeds the 2026 national conforming limit of $832,750. A toggle handles the FHA streamline carve-out for loans endorsed on or before May 31, 2009 (UFMIP 0.01%, annual MIP 0.55%). Selecting VA adds the funding fee with a toggle for first-use versus subsequent-use. Eligible disabled veterans are exempt — override the funding fee field to $0 if applicable.

How fresh are the rate assumptions?

The calculator does not pull live rates — you enter the rate you have been quoted by a lender. The page is reviewed at least quarterly. For market context, the standard U.S. reference is the weekly Freddie Mac Primary Mortgage Market Survey (PMMS), updated Thursdays.

What credit score do I need to refinance?

Most conventional refinances require a 620 minimum FICO, with the lowest rates unlocked at 740 and above. FHA streamline refinances allow 580 (sometimes lower with manual underwriting). VA IRRRLs have no statutory minimum but lenders typically want 620+. Credit score also drives your PMI rate if your new loan exceeds 80% LTV — a 760+ score can cut PMI cost by roughly a third compared with 680.

Should I roll closing costs into the new loan?

Rolling closing costs into the loan keeps out-of-pocket near zero, but you pay interest on those costs for the full loan term — often $4,000–$6,000 extra over 30 years on a typical $5,000 closing-cost refinance. Paying upfront is cheaper if you have the cash and will stay in the home past the breakeven point. The calculator's Roll closing costs into the new loan toggle lets you compare both scenarios directly.

How long does refinancing actually take?

Most refinances close in 30 to 45 days from application. Streamline products (FHA Streamline, VA IRRRL) skip income documentation and the appraisal, closing in 2–3 weeks. Cash-out refis take longer because they require full underwriting and a fresh appraisal — plan for 45–60 days, especially in busy purchase markets when appraisers are backed up.

Can I refinance with low or no equity?

Conventional refis cap at 95–97% LTV depending on the product. FHA allows up to 96.5% LTV on a streamline from another FHA loan. VA IRRRLs have no LTV cap. If you're underwater (LTV above 100%), check Fannie Mae's RefiNow or Freddie Mac's Refi Possible programs, which are designed for high-LTV and lower-income scenarios and ignore the 97% cap.

Will refinancing hurt my credit score?

The hard inquiry typically lowers your score by 5–10 points temporarily. Multiple mortgage inquiries within 14–45 days count as a single inquiry for FICO scoring, so shopping multiple lenders does not compound the hit. The new loan replacing the old one is a neutral substitution, not a credit downgrade. Scores usually recover within a few months of consistent on-time payments on the new loan.

Does the calculator account for the mortgage interest tax deduction?

No. The calculator excludes mortgage interest deduction effects. After the 2017 Tax Cuts and Jobs Act roughly doubled the standard deduction, fewer homeowners itemize, so we don't assume a tax benefit by default. If you do itemize, your effective interest rate is lower than the quoted rate by approximately your marginal tax bracket × the deductible portion of interest. We're working on a dedicated tax implications guide.

How accurate are the state-specific closing-cost defaults?

Defaults are calibrated from public sources (Tax Foundation, NAIC, state revenue departments) and are reasonable starting points for budgeting. Your actual Loan Estimate from a specific lender is the authoritative number. Once you have it, override the line items in Closing costs (itemized) with your real values — the calculator updates breakeven and monthly figures live as you type.

Why do my numbers differ from my lender's Loan Estimate?

Several common reasons: the lender's APR includes mortgage insurance or discount points that this calculator handles separately; their PMI rate comes from a specific MI provider with proprietary pricing; their title insurance is from a specific title company with its own rate filing; their appraisal fee reflects their vendor. The Loan Estimate is regulated under TRID disclosure rules and is always the authoritative number for your actual transaction — override our defaults with those values.

Want to compare more scenarios?

Run a side-by-side comparison or dig into a specific refinance question.