Refinance when your current rate is 200+ bps above today's market, your credit profile has materially improved, you need to extend term and lower monthly payments, or you're consolidating multiple debts. Don't refinance if prepayment penalties exceed projected savings or restarting amortization wipes out interest savings.
Business loan refinancing replaces an existing loan with a new loan — ideally at a lower rate, longer term, or both. The decision is purely mathematical: does the present value of the savings outweigh the cost of executing the refinance? Here are the five conditions where refinancing clearly makes economic sense.
Three conditions make refinancing economically unfavorable: (1) Substantial prepayment penalty on the existing loan. If your current loan charges a 3–5% prepayment fee, this fee must be counted as an upfront cost of the refinance. On a $500,000 loan, a 3% prepayment fee is $15,000 — which may exceed the interest savings if the rate reduction is modest. (2) Closing costs exceed 5-year interest savings. Total the new loan's closing costs (origination, legal, SBA guarantee fee if applicable, appraisal) and divide by the monthly interest savings — if payback period exceeds 5 years, the refinance is likely not worth executing. (3) Restarting amortization significantly extends total interest paid. If you are 3 years into a 5-year term loan and refinance into a new 5-year loan, you are adding 3 years of interest on the outstanding balance. Calculate total interest paid over the full payoff timeline of both scenarios before deciding — the lower rate may not offset the extended amortization.
The SBA permits refinancing existing business debt into a new SBA 7(a) loan under specific conditions: the existing debt must be on unreasonable terms (rate or structure), refinancing must result in a demonstrable benefit to the borrower, and you cannot use SBA refinancing to refinance existing SBA debt unless there is a compelling reason (rate improvement of 200+ bps is typically required). SBA 504 loan proceeds can refinance conventional commercial real estate mortgages under the 504 Refinance Program if 85% of the new loan proceeds go to refinancing eligible fixed assets.
A Denver restaurant owner has a $400,000 term loan at 9.5% with 36 months remaining. Current market offers 7.0% on a 5-year term. Monthly interest savings: approximately $700/month. New loan closing costs: origination (1.5%) + legal = $7,000. Prepayment penalty on existing: 2% = $8,000. Total upfront cost: $15,000. Break-even: $15,000 / $700 = 21 months. She is refinancing with 36 months remaining — break-even at month 21 means she captures 15 months of net savings. Refinance is worth it.
SBA does not allow refinancing existing SBA-guaranteed debt into a new SBA loan unless specific conditions are met (unreasonable terms, demonstrable borrower benefit, 200+ bps rate improvement). If you already have an SBA loan, consult your SBA Preferred Lender before assuming a refinance into another SBA product is available.