Should you pay off your mortgage early?
Paying a mortgage off early can save a startling amount of interest — but the money could also work elsewhere. The right answer is part math, part temperament.
Skip the math — the free mortgage payoff calculator with extra payments runs this from your own figures.
Open the free calculator →Why extra payments save so much
Mortgages front-load interest: for years, most of each payment covers interest rather than principal. An extra payment skips that — it goes straight to principal, which then never accrues interest again for the decades that remain.
That's why a modest recurring extra payment can cut years off the term and save a large multiple of itself in interest. The effect is biggest early in the loan, when the balance and remaining interest are largest.
The opportunity-cost question
The honest counterargument is opportunity cost. Money used to prepay a low-rate mortgage can't be invested. If your mortgage rate is lower than what you could reasonably earn investing, the math may favour investing the difference instead.
It's not guaranteed, though — investment returns carry risk, while prepaying a mortgage gives a certain 'return' equal to your mortgage rate. Higher mortgage rates tilt the decision toward paying down; low rates tilt it toward investing.
Don't skip the basics first
Before prepaying a mortgage, it usually makes sense to clear higher-interest debt (credit cards), build an emergency fund, and capture any employer retirement match — each of these typically beats prepaying a mortgage on pure returns.
A mortgage is often the cheapest debt you'll ever have, so it's rarely the first thing to attack. Prepay it after the higher-return moves are handled.
The value of certainty
Numbers aren't everything. Being mortgage-free brings a real, if unquantifiable, sense of security and lowers your fixed costs — which can matter enormously near retirement or in an uncertain income situation.
Plenty of people rationally choose the guaranteed progress and peace of mind of a shrinking mortgage over a possibly-higher but uncertain investment return. That's a legitimate choice, not a mistake.
Decide with your own numbers
The way to decide is to quantify the payoff side and weigh it against your alternatives and your temperament. See exactly what a given extra payment saves in interest and time, then compare that guaranteed benefit to what the same money might do elsewhere.
The free calculator below shows the interest and years saved from any extra payment, so the payoff side of the decision is concrete rather than a guess.
Questions
Is it better to pay extra monthly or make one lump sum?
Both help; the best choice depends on timing. A lump sum applied early removes a large chunk of interest-bearing principal immediately, which is powerful. Consistent extra monthly payments are easier to sustain and still cut years off the loan. If you have a windfall, applying it early beats waiting; if you don't, a steady monthly extra is the practical route. The calculator lets you test either.
Will paying extra reduce my monthly payment?
Usually not — extra principal payments typically shorten the loan term rather than lower the required monthly payment, unless you specifically 'recast' the mortgage with your lender. So you finish years earlier and pay less total interest, but your scheduled payment stays the same. If lowering the monthly payment is your goal, ask your lender about recasting or refinancing instead.