Fixed vs. variable-rate business loans: how to choose

The tradeoff

A fixed rate keeps the payment predictable for the fixed period. A variable rate is usually priced as benchmark + spread and can start lower, but the payment changes when the benchmark moves and the loan resets.

Use breakeven, not a forecast

Nobody reliably predicts rates. A better question: how far would the benchmark have to rise before the variable loan costs more over its life than the fixed quote? If that move is small, fixed is cheap insurance. If it's large, variable may be worth the risk — as long as you can afford the payment in a bad case.

Details that change the answer

• Floors: a variable rate may not fall below a minimum even if rates drop
• Caps: some notes limit how high the rate can go
• Reset frequency: monthly resets pass changes through quickly; 3- or 5-year fixed periods delay them
• Prepayment penalties: they can make it costly to refinance out of a fixed loan
• Fees: compare all-in cost, not just the note rate

A practical rule

Choose the structure whose worst realistic payment your cash flow can still cover with room to spare. If a 2–3 point rise would push your DSCR near a lender's minimum, the lower starting rate probably isn't worth it.