Should I Refinance Now or Wait? The 0.75% Rule

The Question Every Rate Dip Brings Back

Every time mortgage rates tick down, the same question fills inboxes: should I refinance now, or wait for a better rate? It's the right question — and it has a numeric answer that most coverage skips. The decision isn't about where rates are headed. It's about three numbers you can compute today: your current rate, the rate you can lock now, and how long you'll stay in the house.

With the 30-year fixed averaging about 6.625% in mid-2026 — down from the 7%+ peak of 2024 but far from the 3% era — a meaningful share of borrowers now sit in the refinance zone. Someone who took a 7.5% loan in 2024 is looking at a rate 0.875% below theirs. Someone who locked 6.75% in early 2025 is looking at a gap of about 0.125%. Same market, opposite answers.

This guide walks through the 0.75% rule, the breakeven math that decides the deal, what the $4,000-$8,000 of closing costs actually buy, and the specific situations where waiting — or skipping the refinance entirely — is the smarter play.

The 0.75% Rule: Why the Differential Is the Whole Game

Mortgage professionals have used the 0.75%-to-1.00% threshold for decades, and it survives because it's the point where the math flips. Below a 0.75% drop, the monthly savings on a typical balance are too small to recover $4,000-$8,000 of closing costs within a reasonable holding period. At or above 0.75%, the savings compound fast enough that the costs become a rounding error over a few years.

Here's what the rule actually looks like on a $350,000 loan, with today's rates as the target:

Payments computed at 30-year amortization on a $350,000 balance. Breakeven = closing costs ÷ monthly savings. A 7.25% borrower saves $147/mo (payment $2,388 → $2,241); breakeven 41 months at $6,000 costs.

Notice the shape of the table: the first 0.375% of rate drop is worth $88 a month, but the next 0.375% is worth another $118. Savings accelerate because they're a function of the rate difference itself — every additional quarter-point adds more than the one before it on the same balance. That's why the rule is stated as a differential, not an absolute rate: a 6.0% borrower in 2021 needs rates near 5.25% to justify a refinance, exactly like a 7.5% borrower needs rates near 6.75% today.

Breakeven Math: The Number That Decides

The breakeven point is simple: total closing costs ÷ monthly savings = months to recover. If your refinance costs $6,000 and saves you $206 a month, you break even in about 29 months. Stay longer and the refinance is pure profit. Move sooner and you paid $6,000 for a discount you never collected.

Where do the costs come from? A rate-and-term refinance on a $350,000 loan runs $4,000 to $8,000, roughly 1.5% to 2.5% of the balance:

• Origination fee: 0.5% to 1% of the loan ($1,750-$3,500 on $350K) — the lender's charge, and the most negotiable line item
• Title insurance and settlement: $800-$1,500, re-run for the new lender
• Appraisal: $400-$600 (sometimes waived on rate-and-term refis)
• Credit report, recording, misc: $200-$500
• Prepaids and escrow funding: interest, taxes, and insurance collected into the new escrow — these aren't really costs, since they're prepayments of bills you'd pay anyway, but they do hit your cash at closing

Two structural options change the breakeven entirely. A no-closing-cost refinance rolls the fees into a slightly higher rate — you pay nothing upfront, but your monthly savings shrink, and the breakeven stretches. That structure wins if you're unsure about staying long-term. The opposite, paying points to buy the rate down, front-loads cost to shorten the breakeven — worth it only if you're certain you'll stay.

Computed on a $350,000 30-year balance using standard amortization. Your figures depend on loan balance, term remaining, points paid, and the lender's fee structure.

The second table is the one to internalize. Even at a full 1.25% drop, an $8,000 cost package stretches the breakeven to 27 months. And at the exact 0.75% threshold — the rule's floor — an $8,000 package needs almost four years. That's why the rule comes with a companion question: how long do you plan to stay? If the answer is shorter than the breakeven, the refinance is a loss, full stop.

The Case for Waiting (and It's Not About Rates)

Waiting gets a bad reputation, but there are two legitimate reasons to hold off, and only one of them is about the rate forecast.

The rate reason. The Fed has been cutting gradually through 2026 — two quarter-point cuts through mid-year, with market expectations of one or two more. Each cut pushes mortgage rates lower in fits and starts, but the mortgage market prices expectations in advance, so the 6.625% you see today already reflects much of the anticipated path. Waiting for a specific number like "under 6%" can cost you real money in the meantime: six months of waiting at a 0.75%-eligible gap is six months of $200+ savings you didn't collect. The breakeven math treats waiting as a cost, not a hedge.

The qualification reason. A refinance is a new underwriting event. If your credit score dropped since you took the loan, if your debt-to-income ratio crept up, or if your income picture changed, the rate you qualify for today may not be the advertised rate. Check your DTI and credit profile before you get attached to a quote — see our credit score guide for where you need to be. If your profile is weaker than when you originated, fixing it for six months can be worth more than any rate movement.

When NOT to Refinance — Even at a 1% Drop

Four situations where the rate looks right and the deal is still wrong:

• You'll move before the breakeven. The math is unforgiving: closing costs spent are spent. If your job or family situation suggests a move inside the breakeven window, the refinance is a donation to the lender.
• You'd reset the clock. A 30-year refinance on a loan you've held 7 years starts a fresh 30-year term. The lower rate gets eaten by 7 extra years of payments. Fix it by matching the new term to your remaining original term — or keep paying the old amount so the rate cut accelerates principal.
• Your balance is small. Under $100,000, closing costs of $4,000-$8,000 represent 4-8% of the loan — an unrecoverable wall. The savings per month can't climb it. Consider extra principal payments instead; see our pay-off-early guide for the alternatives.
• It's a cash-out refi for spending. Pulling equity to buy things converts your home's value into 30-year debt at mortgage rates. If you need cash, compare against a home equity loan or HELOC first — the shorter term and lower rate on a second lien often beat the cash-out refi.

Rate-and-Term vs. Cash-Out: Pick the Right Refinance

A rate-and-term refinance changes only the rate and term. The balance stays roughly the same, the costs run $4,000-$8,000, and this is the version every breakeven table in this guide assumes. A cash-out refinance borrows more than you owe and hands you the difference — useful for a major renovation or debt consolidation, but it prices slightly higher than a rate-and-term, adds to your balance, and restarts your amortization on the whole amount. If your goal is a lower payment, cash-out is the wrong tool. If your goal is liquidity at mortgage rates, it's one of three options, and the other two — HELOC and home equity loan — often win on cost.

Rate Locks and Timing Tactics

Once you decide to refinance, the execution has its own timing. Lenders quote a rate, but you lock it — and lock windows run 30 to 60 days, with float-down options on some programs. The tactical detail: rate quotes move with inflation data. CPI lands mid-month, PCE late in the month, and a hot reading can cost you 15-25 basis points overnight. If you're shopping, lock when the gap against your current rate clears 0.75% — don't hold out for the last basis point while a data release looms. For the mechanics of locking, see our rate lock guide, and check the current mortgage rates page to see where quotes stand today.

Run Your Own Numbers Before You Call a Lender

The refinance decision is a five-minute calculation you can do yourself. Pull your current rate and balance from your last statement, get a today quote from any lender, and divide the estimated closing costs by the monthly savings. Our refinance calculator does the amortization for you, including the term-reset trap. And before you commit, compare rates across at least three lenders — the same 0.75% rule applies to lender shopping: a quarter-point difference between two quotes is worth $73 a month on a $350,000 balance, which is a breakeven difference of a year.

One more number to keep honest: the advertised rate is for the best-credit borrower in the best market. Your actual quote can run 0.25% to 0.5% higher depending on credit score, loan-to-value, and loan size — so compute the gap against the rate you're actually offered, not the one in the ad. If your offered rate doesn't clear the 0.75% threshold, the decision resolves itself: wait, rebuild credit or equity, and revisit at the next rate dip.

The 15-Year Refinance Option: A Different Trade

Every table in this guide assumes a 30-year refinance, but the 15-year fixed deserves its own row. At mid-2026 pricing, the 15-year averages about 5.875% against the 30-year's 6.625% — and the shorter term turns the rate advantage into a dramatic interest reduction. On a $350,000 balance, a 15-year at 5.875% runs $2,930 a month with about $177,400 of total interest, versus $2,241 a month and $456,800 of interest on the 30-year. That's $279,000 of avoided interest in exchange for $689 more per month.

The 15-year is the refinance for the borrower whose real goal is debt elimination, not payment reduction. The breakeven math works differently — you're not saving monthly cash, you're buying equity faster — but the "stay past the breakeven" rule still applies: the payment commitment is permanent, so it only makes sense with a stable income and a funded emergency reserve. If you want the 15-year's interest savings without the payment shock, there's a hybrid: refinance into a 30-year at the lower rate, then make the 15-year payment voluntarily. The rate is a bit higher than the pure 15-year, but you keep the option to drop back to the 30-year payment in a bad month. That flexibility is worth real money to people whose income varies.

Buying Down the Rate: Points on a Refinance

Discount points complicate the breakeven table in one specific way: they're a prepayment that buys a lower rate. One point — 1% of the loan, $3,500 on a $350,000 balance — typically reduces the rate by 0.25% to 0.375%. A $3,500 point that cuts your rate from 6.625% to 6.375% lowers the payment by about $57 a month on $350,000, putting the point's breakeven near 61 months. Points only make sense if you're certain you'll hold the loan past that mark — and on a refinance, points carry a second cost: they're amortized for tax purposes over the loan term (about $117 a year deductible on that $3,500), which dilutes the tax benefit versus purchase points, which deduct in full upfront.

The decision rule is the same as the refinance decision itself: compare the point's cost against the monthly saving over your planned holding period. If you're on the fence about staying five years, skip the points — the extra $3,500 of closing cost stretches your breakeven at the worst possible time. Our points guide has the full math.

Refinancing to Drop PMI or Switch Loan Type

Not every refinance chases the rate. Two structural refinances are common at current pricing:

• FHA to conventional. FHA loans carry mortgage insurance for the life of the loan when you put down less than 10%. Once you have 20% equity, a rate-and-term refinance into a conventional loan eliminates that MIP entirely — a monthly saving that stacks on top of any rate improvement. The math can justify a refinance even at a smaller rate gap, because the MIP removal is worth more than the rate move.
• Dropping PMI on a conventional loan. Conventional PMI falls off automatically at 78% LTV, but a refinance with a new appraisal can reset the value if your home appreciated — turning an 82% LTV into an 75% LTV on paper and killing the PMI today. See our PMI removal guide for the mechanics and our PMI calculator for the savings.

These structural refinances are why the 0.75% rule is a starting point, not a law: the rule assumes you're refinancing for rate alone. When the refinance also removes insurance, changes the loan type, or resets an outdated value, the breakeven can work at a smaller rate drop.

Frequently Asked Questions About Refinancing

Your Refinance Decision Checklist