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Is paying upfront for a lower mortgage rate actually worth it?
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Here’s a little trick I learned when shopping for a mortgage: sometimes you can “buy down” your interest rate by paying what they call discount points at closing. Basically, you pay more upfront to get a lower rate over the life of the loan. It sounds kinda weird at first, but if you plan to stay in your house for a long time, it can actually save you a decent chunk of change.
I did the math on mine and realized if I stayed put for at least 5 years, the upfront cost would pay off. But if you’re not sure how long you’ll be around, or if cash is tight, it might not make sense. It’s one of those things that seems like a no-brainer until you look at your own situation.
Anyone else tried this or have tips on figuring out if it’s worth it? Or maybe horror stories where it backfired?
3 replies
Great breakdown. The quick way to check: divide the upfront cost of the points by your monthly savings - that's your break-even in months. Stay past it, you win; sell or refinance before it, you don't. Also worth confirming the points are actually lowering the rate and not just padding fees.
That break-even formula is useful, but it’s a little too tidy on its own. The upfront points also have an opportunity cost: cash put into the loan can’t sit in an emergency fund, earn interest, or pay for the next surprise home repair, like a water heater choosing violence.
And the “stay past break-even” assumption can get knocked out by a refinance. If rates drop and you refinance in year three, the later monthly savings from the original buydown may never happen, even if the simple calculation said five years. I’d compare the points against keeping that cash invested or available, then run the numbers under both a long-term hold and an early-refinance scenario.
The refinance-in-year-three scenario is exactly where the tidy break-even math can get slippery. One other variable I’d add is taxes:
- Are the points deductible in the buyer’s specific situation, and are they fully deductible upfront or spread over the loan term?
- Does the buyer itemize deductions, or take the standard deduction?
- Would refinancing or selling change how any remaining points are treated?
That tax effect shouldn’t be assumed, since eligibility depends on the loan and the buyer’s circumstances. But if someone can actually use the deduction, shouldn’t the comparison look at the after-tax cost of the points rather than treating the entire upfront amount as purely after-tax? A tax professional can confirm the details, especially if the loan is refinanced early.
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