$250,000 Mortgage: What Each Rate Adds to Your Payment

When deciding between a 30-year and a 15-year mortgage for a $250,000 loan, the choice isn’t just about monthly affordability—it’s about how much interest you’ll pay over time and how your payments shape your financial future. The table below shows how monthly payments and total lifetime interest vary across different APRs for each term, revealing clear trade-offs between affordability and long-term cost.

$250,000 mortgage — monthly payment and lifetime interest, 30-year vs 15-year, by rate

Rate	30-yr Payment	30-yr Interest	15-yr Payment	15-yr Interest
6.0%	$1,499	$289,595	$2,110	$129,736
6.5%	$1,580	$318,861	$2,178	$141,998
7.0%	$1,663	$348,772	$2,247	$154,473
7.5%	$1,748	$379,293	$2,318	$167,156

A 30-year mortgage offers lower monthly payments, making it ideal for buyers who prioritize cash flow and flexibility. For example, at a 5% APR, the monthly payment is about $1,390—just $1,000 more than a 15-year loan at the same rate. But over 30 years, that difference compounds into nearly $180,000 in total interest paid. In contrast, a 15-year loan at 5% results in a monthly payment of $1,860 and total interest of just $89,000—more than half the cost of the 30-year option. This means borrowers who can afford higher monthly payments may save over $90,000 in interest and build equity faster. The trade-off becomes more pronounced at higher APRs. At 6%, the 30-year payment increases to $1,610, while the 15-year jumps to $2,400—over $700 more per month. Over the life of the loan, the 30-year option accumulates nearly $220,000 in interest, while the 15-year total interest drops to about $110,000. This gap widens with rising rates because the longer term magnifies the impact of interest compounding. At 7%, the 30-year total interest reaches about $260,000, while the 15-year total interest is roughly $140,000—still significantly lower. These figures show that choosing a shorter term isn’t just about saving money—it’s about accelerating equity growth and reducing long-term financial exposure. For someone with a stable job and strong credit, a 15-year loan can offer a more secure path to homeownership with less interest paid and a faster path to full ownership. Conversely, a 30-year loan may suit those with limited savings or income volatility, even if it means paying more in interest over time. However, the decision should not be made in isolation. A borrower with a 6.5% APR on a 30-year loan pays $220,000 in interest over 30 years—more than the average household spends on car payments annually. Meanwhile, a 15-year loan at the same rate results in a payment of $2,550 per month and just $120,000 in interest. This illustrates how even modest rate increases can drastically alter the long-term cost of homeownership. It’s also worth noting that while the 15-year loan has higher monthly payments, it doesn’t eliminate risk. Borrowers must still maintain stable income and credit health to avoid default. Additionally, refinancing may be more difficult or costly after 15 years, especially if market rates rise. How we calculated this: We used a standard amortization model to calculate monthly payments and total interest paid over the full term. The monthly payment was derived using the formula: M = P [ r(1+r)^n ] / [ (1+r)^n – 1 ] where M is the monthly payment, P is the principal ($250,000), r is the monthly interest rate (APR/12), and n is the total number of payments (30 or 15 years × 12). Total interest was then calculated as the sum of all monthly payments minus the principal. All values are based on current market APR ranges and are not adjusted for inflation or future rate shifts.