Here is the money problem, Patriot Nation: a full point buys more rate than you need, a half point buys less, and the difference between them is thousands of dollars of cash at closing. The answer is usually the custom increment in between, priced to fit your exact loan. Get the increment right and you stop at the payment you want instead of overpaying for rate you never use. Let's see how the pricing grid actually works.

Available Increments

The term to know is pricing granularity: the smallest step a lender's rate sheet can price, and it decides how custom your points can be. The meaning: mortgage points are typically priced in quarters, 0.25% of the loan amount per increment, so 0.5, 0.75, 1, 1.25, and 1.5 points are standard offers, and some lenders quote any fraction down to the exact dollar because points are just prepaid interest. The money part: the practical constraint is not math, it is that most lenders publish rate pricing in 0.125% rate steps, and the point cost between steps defines the smallest useful increment you can buy. The real-world consequence: if you want 0.63 points, find the lender whose sheet can quote it, because a round number you do not need is cash you overpaid.

Rate Scaling

The term to know is the rate grid: the lender's table of rate options, each with its point cost. The meaning: rate and points scale together in a step pattern rather than a perfect line, and on a typical sheet each 0.25 point buys roughly 0.125% off the rate, with the steps not always uniform across the curve. The money part: the first quarter point often buys a little more rate than the fourth, which is why the grid, not the math, is where custom amounts come from. The real-world consequence: your actual scaling comes from the lender's live rate sheet, so ask for the same quote at 0.5, 0.75, and 1 point before you decide, and let the real numbers pick the increment.

Lender Options

The meaning: not every lender quotes custom increments the same way, because direct lenders who control their pricing can usually price any point amount on their own rate sheet, while brokers and correspondent lenders work from a warehouse lender's grid where the granularity varies. The money part: point costs are percentages of your loan amount, so the dollar cost of 0.63 points on a $350,000 loan is very different from the cost on a $250,000 loan. The real-world consequence: ask for a rate sheet that shows your exact loan size, and because I shop across lenders as a mortgage broker, I can find the sheet that prices the increment you actually want.

Choosing the Right Amount

Choose the increment that lands the payment and the break-even where you need them, not the roundest number. The meaning: if a full point buys more rate than you need and half a point buys less, the right answer is often the fractional amount in between, priced to fit your exact loan. The money part: I weigh three things, the monthly savings per increment, the cash you are willing to put into points, and the break-even against your expected time in the home. The real-world consequence: when those three line up, the custom increment is the cheapest way to get exactly the rate you want without overpaying for rate reduction you do not need, and the break-even is what keeps you honest.