Is 2/10, Net 30 Worth Taking? The Annualized Math on Early-Payment Discounts

A supplier's invoice says “2/10, net 30.” Pay within 10 days and take 2% off. Otherwise, the full amount is due in 30. Most owners read that as a minor convenience — a rounding error either way — and pay on whatever day is easiest for cash flow that week. That instinct is costing real money, and the gap is bigger than it looks once you annualize it.

This post walks through the actual formula, runs it against the most common trade-discount terms, and tells you when skipping the discount is genuinely the right call versus when it is just an unexamined habit.

The formula, and why "2%" is not the real number

A 2% discount for paying 20 days earlier (day 10 instead of day 30) is not a 2% annual return — it is a 2% return compressed into a 20-day window, which repeats roughly 18 times a year if the relationship were continuous. The standard trade-finance formula for annualizing a cash discount is:

Annualized rate = [Discount % ÷ (100% − Discount %)] × [365 ÷ (Full term days − Discount period days)]

For 2/10, net 30: [2 ÷ 98] × [365 ÷ 20] = 0.0204 × 18.25 = 37.2% annualized. Compare that to the 6.75% prime rate (see our WSJ Prime Rate explainer) that a bank line of credit would charge you to borrow the cash needed to pay 20 days early. Even financing the early payment on a credit line would leave you roughly 30 points ahead.

The annualized cost of NOT taking an early-payment discount

Walking past a 2/10, net 30 discount is the same as turning down an annualized return of roughly 37% — far above the 6.75% prime rate (Fed H.15, confirmed through Nov. 2026) that a line of credit would charge you to fund the early payment instead.

The formula itself is standard trade-finance arithmetic, not a published government statistic — shown here against the Federal Reserve's prime rate as the real-world comparison most owners actually have available.

View the data as a table

	Annualized %
3/15, net 45	37.6%
2/10, net 30	37.2%
1/10, net 30	18.4%
2/10, net 60	14.9%
1/10, net 60	7.4%

Why the gap is so wide across different terms

The annualized rate is sensitive to both numbers in the formula — a bigger discount matters less than a shorter gap between the discount deadline and the full due date. A 2/10, net 60 discount annualizes to only about 14.9%, because the 50-day gap between day 10 and day 60 spreads the same 2% over far more of the year. A 1/10, net 30 discount — half the stated percentage — still annualizes to about 18.4%, because the 20-day window is identical to the 2/10, net 30 case. The discount percentage and the time window both drive the answer; neither alone tells you whether a term is worth taking.

A 2% discount sounds like a rounding error. Annualized over a 20-day window, it is a return most investment accounts cannot touch.

When taking the discount is the obvious move

• You have the cash sitting idle. If the money is already in your operating account earning close to nothing, there is no real comparison to make — take the discount.
• You have access to a business line of credit priced near prime. As shown above, borrowing specifically to capture a 2/10, net 30 discount still nets you a meaningful spread over the 6.75% cost of that credit line, as long as you are not already near your limit or risking a covenant.
• The supplier relationship rewards early payers. Some vendors informally prioritize fulfillment, allocation during shortages, or better terms on future orders for customers who consistently pay early — a soft benefit the pure math does not capture.

When skipping it can still make sense

• Your only alternative source of cash is an MCA or high-cost short-term product. If financing the early payment would cost more than the annualized return itself — a real risk with merchant cash advances, whose true annualized cost routinely runs well above 37% — the discount stops being free money. Compare against our breakdown of MCA traps before assuming any financing source is cheaper than the discount you would capture.
• Paying early would blow through a cash-flow covenant or leave you short for payroll. A 37% annualized return on paper is not worth a missed payroll run or a line-of-credit default. Liquidity risk outranks a discount every time.
• You are already stretching this same supplier past net 30 to manage cash. If the honest baseline is paying late rather than paying on day 30, the discount math changes entirely — and you should have the direct conversation about terms rather than silently skip both the discount and the due date.

How to actually decide, invoice by invoice

Do not treat every discount term the same. Run the formula once for each term a given supplier offers — it takes thirty seconds — and compare the result to your real, current cost of capital: the rate on your business line of credit, or the opportunity cost of cash that would otherwise sit idle. If the annualized discount rate beats that number, pay early, even if it means drawing on a credit line to do it. If a specific short-term financing option would cost more than the discount itself, skip it and pay on the full due date instead — never a day later, since late payment forfeits both the discount and your standing with the supplier.

The owners who consistently capture these discounts are not working with more cash than everyone else. They are the ones who ran the number once, found it was real, and built a habit of paying inside the discount window instead of defaulting to the last day on every invoice. If you want help lining up a line of credit specifically sized to capture these discounts across your supplier base, schedule a consultation and we will run the math against your actual terms.

Important: MidBank is not a bank, a financial institution, or a financial advisor. We are an advocate and ISO affiliate that connects businesses to vetted third-party providers. This article is general information published on November 8, 2026, not legal, tax, or financial advice — rules and rates change, and your situation is specific to you. Confirm details with the primary sources linked above and with a qualified tax or legal professional before acting.