When Should You Refinance Your Mortgage?

The short answer: refinance when the savings clear the break-even#

Refinancing your mortgage means replacing your current home loan with a new one — ideally at a lower rate, a shorter term, or with cash pulled from your equity. It is one of the most powerful money moves a homeowner has, because a mortgage is usually the biggest debt you will ever carry, so even a small rate cut moves real money. But it is not free, and that is the catch that trips people up.

The whole decision comes down to one comparison: the savings the new loan gives you versus the costs to get it. If refinancing drops your payment by $250 a month but costs $6,000 to close, you need to stay in the home two years just to break even. Stay longer and you win; move sooner and you have simply paid a fee for nothing. Get that one number right and everything else is detail.

The rest of this guide walks the whole decision: how the break-even math works, the two main refinance types, when it clearly makes sense, when to leave your loan alone, and — because the rules differ sharply north of the border — how it works for Canadians.

• Break-even first — closing costs divided by monthly savings = months to recoup.
• Know the two types — rate-and-term (lower rate/shorter term) vs cash-out (tap equity).
• Shop at least three lenders — the rate and fees vary more than you would think.
• Don't restart the clock blindly — a fresh 30-year term can erase the savings.

What refinancing actually is (and the two main types)#

When you refinance, a new lender pays off your existing mortgage and you start making payments on the new loan instead. Nothing about the house changes; only the loan does. There are two broad flavours, and knowing which one you want keeps the conversation with a lender short. A rate-and-term refinance swaps your loan for one with a better interest rate, a different term length, or both — this is the classic move to lower your payment or pay the house off faster.

A cash-out refinance replaces your mortgage with a larger one and hands you the difference in cash, drawn from the equity you have built. It is a way to fund a renovation or consolidate pricier debt, but it raises your balance and puts your home on the line, so it deserves real caution. The plain-language overview at Wikipedia's entry on refinancing is a solid primer if the terms are new.

Everything else — streamline programs, no-closing-cost deals, term changes — is a variation on those two. Decide which flavour fits your goal first, and the rest of the shopping gets much simpler.

The break-even rule: the one number that decides it#

Here is the calculation that should drive the whole decision. Add up the closing costs of the new loan — typically 2% to 6% of the loan amount — then divide by the amount you will save each month. The result is your break-even point in months: the time it takes for the savings to pay back the cost of refinancing.

Say the refinance costs $5,000 and lowers your payment by $200 a month. Divide 5,000 by 200 and you break even in 25 months, a little over two years. If you plan to stay in the home well beyond that, refinancing is a clear win; if you might sell or move before then, you would lose money. The Federal Reserve's consumer guide to refinancing walks through the same break-even math with its own worksheet.

This single number cuts through almost every refinancing pitch. A lower rate always sounds good, but it only pays if you keep the loan long enough to clear the break-even. Run that division before anything else.

When refinancing makes sense#

A few situations tip the math firmly in your favour. The clearest is a meaningful drop in rates since you took out the loan — as a rough guide, a gap of three-quarters of a point to a full point is often enough to justify the costs, though the break-even math is the real test. Refinancing also shines when your credit score has climbed since you bought, because a better score unlocks a better rate; it is worth checking where you stand and, if needed, raising your credit score before you apply.

Other strong cases: switching an adjustable-rate mortgage (ARM) to a fixed rate before the rate resets higher, shortening your term from 30 years to 15 to slash total interest (often at a lower rate), or refinancing to drop mortgage insurance once you have enough equity. Each of these can save real money on top of, or instead of, a lower monthly payment.

The thread running through all of them is simple: refinance when it changes the loan in a way that saves you more than it costs, over the time you will actually keep the house.

When to leave your mortgage alone#

Refinancing is not always the move, and knowing when to skip it saves you from an expensive mistake. If you are likely to sell or move within a few years, you probably will not reach the break-even point, so the closing costs are just money gone. And if refinancing means restarting a fresh 30-year term on a loan you are ten years into, you can lower the monthly payment while quietly *increasing* the total interest you pay — a common trap.

It also rarely pays if your current rate is already close to what is on offer, if your credit has slipped since you bought, or if steep prepayment terms on your existing loan eat the savings. Before you refinance to consolidate other debts through a cash-out, weigh it against the alternatives in our guide to debt consolidation, because turning unsecured debt into debt secured by your home is a serious trade.

Cash-out refinancing: using home equity carefully#

A cash-out refinance lets you borrow against the equity in your home, usually up to about 80% of its value, taking the difference between the old and new loan as cash. Used well — to fund a renovation that adds value, or to replace much higher-rate debt — it can be a smart use of cheap, long-term borrowing.

The danger is that it converts your equity into spending and secures the new balance against your home, which means a renovation that overreaches or debt that creeps back can put the roof over your head at risk. Treat the cash as a tool for something that builds value or clearly lowers your interest bill, not as a windfall, and keep the new payment inside a budget you have actually stress-tested.

Streamline refinances: FHA Streamline and VA IRRRL#

If your current mortgage is government-backed, there is an easier path. An FHA Streamline Refinance (for FHA loans) and a VA IRRRL — the Interest Rate Reduction Refinance Loan, for VA loans — are designed to lower your rate with far less paperwork than a standard refinance, often skipping a new appraisal and full income re-verification.

Because they cut out steps, streamline refinances tend to be faster and cheaper to close, which lowers your break-even point and makes a modest rate drop worth capturing. If you have one of these loans, ask specifically about the streamline option before comparing it to a conventional refinance — it is a benefit many eligible homeowners never use.

The costs to expect (and how to lower them)#

A refinance carries most of the same closing costs as your original mortgage: lender origination fees, an appraisal, title work, and various third-party charges, together landing in that 2%-to-6% range. You can lower them by shopping at least three lenders and comparing the all-in figure, not just the headline rate — fees vary widely for the same loan.

One popular option is a no-closing-cost refinance, where the lender covers the fees in exchange for a slightly higher rate. It is not really free — you pay through the rate over time — but it can make sense if you will not keep the loan long enough to justify paying costs up front. Weigh it against your break-even: paying costs now wins if you stay put, while folding them into the rate wins if you might move.

Because your rate hinges on your credit, a little preparation pays for itself. Pull your reports, fix errors, and avoid opening new accounts in the months before you apply.

For Canadians: refinance vs renewal and the penalty trap#

North of the border the mechanics differ in ways that catch people out. First, separate two events: a renewal happens when your term ends and you sign on for another, and it is the natural, penalty-free moment to shop your mortgage around. A refinance means breaking or restructuring the mortgage mid-term — and breaking a term early triggers a prepayment penalty.

On a fixed-rate mortgage that penalty is typically the greater of three months' interest or the Interest Rate Differential (IRD), and the IRD can run to many thousands of dollars, so always get the exact figure from your lender before you commit. Canada also caps a refinance at 80% of your home's value, and you must pass the mortgage stress test set by Canada's banking regulator, qualifying at a rate above your contract rate. The upshot: for many Canadians the smartest refinancing happens *at renewal*, when there is no penalty to overcome.

Timing, rates and not trying to be perfect#

Because a mortgage is so large, small rate moves matter — but trying to catch the exact bottom is a losing game. With 30-year fixed rates hovering around 6.5% in 2026, off their recent highs, many owners who borrowed at a peak now have room to act. Still, rates move on forces no homeowner can predict, and waiting for a perfect number often costs more in missed savings than it ever gains. The better discipline is to know your current rate, watch the gap to what is on offer, and act when the break-even math clearly works.

It also helps to keep the savings honest. When a refinance frees up cash each month, give it a job — extra principal, an emergency buffer in a high-yield savings account, or another goal — rather than letting a lower payment quietly become lifestyle. And before you stretch for a bigger loan, revisit how much house you can actually afford so the new mortgage still fits your life.

Mistakes that cost you at refinance time#

None of these are exotic. They are the ordinary missteps that turn a money-saving move into an expensive one, and each is avoidable.

• Ignoring the break-even — chasing a lower rate without checking how long it takes to pay off the costs.
• Restarting a 30-year clock — lowering the payment while raising total interest.
• Taking the first quote — not shopping three lenders on the all-in cost.
• Treating cash-out as free money — securing spending against your home.
• (Canada) forgetting the IRD — breaking a fixed term without pricing the penalty.
• Refinancing right before a move — paying closing costs you will never recoup.