Rate-drop scenarios

Refinancing from 7.5% to 6% on $800,000: is it worth it?

On these stated assumptions, refinancing from 7.5% to 6% comes out about $67,744 ahead over a 7-year stay after $10,500 of closing costs.

One-and-a-half-point drop on an $800,000 balance, 26 years left into a new 30-year term.

Pre-built example: this page runs on the stated assumptions below, not on a live market quote. It is not today's quote for anyone. Change the balance, years left, term, closing costs, and stay to your own numbers in the Stay or Refi Calculator before drawing any conclusion.

The stated example

Every number below uses this page's own stated example: a $800,000 balance, 26 years left on the current loan, a new 30-year term, $10,500 of closing costs, and a 7-year stay. Change any of those and the answer can change with it. These are worked examples, not rate quotes.

What drives this particular drop

This is a 1.5 percentage point drop on a $800,000 balance, which saves $1,039 a month before costs. Savings scale roughly with balance, while closing costs mostly do not. Halve the balance and roughly the same fee stack has to be repaid from about half the monthly saving, which stretches break-even far beyond the month shown here. Double the balance and the same fees are repaid much sooner. That scaling is why a drop that wins comfortably in this set can fail on a smaller loan with a full fee stack, and why the fee fight matters more as the drop gets smaller.

The second driver is the term restart. This example trades 26 years left for a fresh 30-year term, so part of the payment saving is bought with extra years of payments rather than earned from the lower rate. Read the lifetime interest line before the payment line. Then price the same 6% rate on a 26-year term in the calculator: the payment saving shrinks, the interest saving usually grows, and break-even moves. Both quotes answer real questions; only one of them answers what the loan costs while you hold it.

How sensitive is the answer to closing costs?

Hold every other input at the stated example and vary only the fee stack. This is the negotiation table to bring to a lender: it shows what each thousand dollars of fees does to the same rate drop.

How sensitive is the answer to how long you stay?

Keep the stated $10,500 of closing costs and vary only the stay. Break-even does not move; whether you reach it does. A household that might move in three years should judge this drop on the first row, not the last.

How to judge this drop on your loan

• Scale the balance. Savings grow roughly in proportion to balance; closing costs mostly do not.
• Get the closing cost figure from a Loan Estimate, not an advertisement, and rerun the break-even.
• Ask for the same rate on a term that matches your years left. The payment saving shrinks; the interest saving usually grows.
• Test your earliest realistic move date, not your longest possible stay. The horizon table above shows how quickly the verdict can flip.

How to read this case

Scale changes everything about the arithmetic. A one-and-a-half-point drop on an $800,000 balance frees a monthly saving that smaller loans cannot approach, because the rate is acting on a very large base. Against that saving, even five-figure closing costs, the highest in this set of examples, are repaid in a comparatively short month count. This is the balance-size effect at full strength, and it is why quoting closing costs as a percentage of the loan misleads in both directions: the percentage here looks ordinary while the dollars are the largest on the page, and the dollars are what the saving has to repay.

The mirror image of fast repayment is fast leakage. On a loan this size, small pricing differences are worth large sums: an eighth of a point of rate, a point bought carelessly, or a few thousand dollars of lender charges each carry more weight than the entire closing cost debate on a small loan. The discount points guide on this site works the points break-even separately, and it is worth reading before anyone offers to improve this rate further for cash at closing. At this balance, each point costs a five-figure sum and must earn it back month by month.

The term restart, 26 years left into a new 30-year term, adds four years to the road. On the stay horizon the interest saving dominates the picture, but a household that keeps this loan to its end should read the full-loan interest table rather than the payment line, because the extra years are real payments. High-balance borrowers also tend to have options: paying the old pace, choosing a shorter term, or splitting the difference. The calculator handles each; the coaching point is that the term decision on $800,000 deserves the same care as the rate decision, since both move five-figure sums.

The verdict pattern for this case is strong but conditional. The condition is cost control at the Loan Estimate stage, where a borrower with this balance has genuine leverage to compare offers, and honesty about the stay, because even a fast break-even is not instant. Meet both conditions and a one-and-a-half-point drop at this scale is the clearest case in the set: the monthly saving is large enough that the refinance repays its costs early in the stay and keeps returning money for years after.

Common questions about this case

Related scenarios

Compare this case against 8.5% to 6.5% on $450,000 and 8.25% to 6.25% on $275,000 on their own stated balances and assumptions, or return to all rate-drop scenarios. If your fee stack is the open question, read lender credits explained before you judge any of them.