Will your franchise cash-flow at high interest rates? Run the SBA debt-service stress test, model your DSCR at 12–15%, and three revenue scenarios before you sign.
Quick answer: With SBA 7(a) rates running roughly 10.5–15.5% in 2026, debt service is now the line that decides whether a franchise deal pencils. Before you sign, calculate the unit’s debt-service coverage ratio (DSCR) under three revenue scenarios — most lenders want at least 1.15–1.25x, and if your down-20% case drops below 1.0x, the deal is too fragile to bet on.
A franchise that looked like a layup at 6% money can quietly turn into a monthly cash drain at 13%. The unit economics didn’t change. The debt did.
Here’s the mechanism. SBA 7(a) loans are pegged to the prime rate plus a lender spread that the SBA caps but doesn’t make cheap. In 2026 that lands most franchise borrowers somewhere around 10.5% on the strong end and 15.5% on the weak end, with the typical single-unit buyer in the 12–14% band. On a $400K acquisition loan, the difference between 6% and 13% is roughly $1,500 a month in payment — about $18K a year that comes straight out of owner take-home.
That’s the whole game right now. The brands didn’t get worse; the cost of carrying them did. Buyers who model a deal at last decade’s rates are looking at a number that no longer exists, and the gap shows up in exactly the wrong place: your personal income in year one, when you have the least cushion.
So the question isn’t “is this a good franchise.” It’s “does this unit throw off enough cash to cover a 12–15% loan and pay me?” Only the second question keeps you solvent.
DSCR is the one number lenders actually underwrite, and it’s the one buyers most often skip.
The formula is simple:
DSCR = Net Operating Income ÷ Annual Debt Service
Net operating income (NOI) is what the unit earns after operating costs but before the loan payment and before your owner draw. Annual debt service is the total of twelve loan payments. Divide one by the other and you get a ratio.
Lenders generally want to see at least 1.15–1.25x on the deal, and they’ll stress your projections downward before they calculate it, because they’ve watched optimistic pro-formas blow up. You should do the same to yourself. A deal that only clears 1.25x on the franchisor’s rosiest numbers is not a 1.25x deal — it’s a coin flip that’s been dressed up.
Where do you get the inputs? Item 7 of the FDD gives you the initial investment range, which sizes your loan. If the brand publishes an Item 19, that’s your starting point for revenue and sometimes expenses, though you’ll need to read it critically — our guide on how to read a franchisor’s pro-forma without falling for inflation tricks shows where those numbers get optimistic. Then validate against real franchisees, because a disclosed average is not your unit.
You don’t need a finance degree to size the payment. You need three numbers: loan amount, rate, and term.
For a 7(a) loan without real estate, the term is usually 10 years. Plug in the loan, a rate in the 12–15% range, and 120 months, and any amortization calculator spits out the monthly figure. Here’s what that looks like across common franchise loan sizes at 13%, a reasonable mid-2026 assumption:
| Loan amount | Rate | Term | Monthly payment | Annual debt service |
|---|---|---|---|---|
| $250,000 | 13% | 10 yr | ~$3,730 | ~$44,800 |
| $400,000 | 13% | 10 yr | ~$5,970 | ~$71,600 |
| $550,000 | 13% | 10 yr | ~$8,210 | ~$98,500 |
| $750,000 | 13% | 10 yr | ~$11,200 | ~$134,300 |
Two things jump out. First, the annual debt service on a mid-sized deal is a serious salary’s worth of money the unit has to produce before you see a dollar. Second, most SBA 7(a) loans are variable and reprice quarterly with prime — so the payment in that table can drift up, which is exactly why you model the top of the range, not the bottom.
A practical move: pull a real amortization figure for your specific loan size, then sanity-check it against your reserve. The franchise investment calculator lets you drop in the investment range from Item 7 and a rate, and see the payment and runway side by side before you talk to a lender. It’s the fastest way to find out whether the deal is even in the conversation.
A single-point projection is a guess. A stress test is a decision tool. Run three cases on every deal.
Take a worked example. Say you’re buying a service franchise with a $400K loan at 13% (annual debt service ~$71,600), and the brand’s validation calls suggest a mature unit nets about $130K in NOI before debt and draw. Here’s how the DSCR moves:
| Scenario | NOI | Annual debt service | DSCR | Verdict |
|---|---|---|---|---|
| Down 20% (rough year) | $104,000 | $71,600 | 1.45x | Survives |
| Flat (base case) | $130,000 | $71,600 | 1.82x | Comfortable |
| Up 10% (good year) | $143,000 | $71,600 | 2.00x | Strong |
This deal is healthy — even a 20% revenue hit keeps you well above 1.0x, with room to pay yourself. Now run the same loan against a thinner unit netting $85K:
| Scenario | NOI | Annual debt service | DSCR | Verdict |
|---|---|---|---|---|
| Down 20% | $68,000 | $71,600 | 0.95x | Underwater |
| Flat | $85,000 | $71,600 | 1.19x | Barely clears |
| Up 10% | $93,500 | $71,600 | 1.31x | OK if everything goes right |
Same loan, same rate — completely different risk. The second deal goes underwater the moment revenue dips 20%, which is not a tail event; it’s a normal bad year, a new competitor, or a slow ramp. The “down 20%” line matters most, because it tells you what happens when reality disagrees with the brochure. If that line breaks 1.0x, you’re one soft quarter from writing personal checks to your own business.
This is where buyers get burned: they fall for the flat-case number, sign, and discover in month seven that the ramp was slower than implied — and the payment doesn’t care. Build the down-20% case first. If you can live with it, the upside is gravy.
Lenders and buyers want different cushions, and you should hold yourself to the higher one.
A lender is protected by your personal guarantee, your collateral, and often a lien on your house. A 1.15x DSCR is fine for them because if the unit stumbles, they have recourse to your assets. You don’t have that luxury — when the DSCR slips, the lender gets paid and you eat the gap.
So set your own floor above the lender’s. A sensible personal threshold:
That last point trips up disciplined buyers who run clean DSCR math and still get caught short. The coverage ratio measures a mature year; the danger zone is months one through twelve. Size your reserve for the ramp, not the steady state — our breakdown of how much cash reserve a franchise actually needs covers the runway math DSCR won’t show you.
Sometimes the honest answer is that the deal doesn’t work at 2026 rates. That’s not a dead end — it’s a list of dials. Before you walk, pull these:
Run every deal through all three scenarios, hold the line on your down-20% floor, and let the math decide. When you’re ready to see the full picture for a specific brand — the margin assumptions behind the DSCR, the Item 7 ranges, the validation context — the $49 Tier 2 report on our pricing page rebuilds this math per brand so you’re not stress-testing in a vacuum. A franchise that pencils at 13% is one you can buy with your eyes open. One that only works at 6% is a deal you’ve already missed.
Model 12–15% to be safe. SBA 7(a) rates in 2026 run roughly 10.5–15.5% depending on loan size and lender spread, and most variable-rate loans reprice quarterly with prime, so underwriting at the low end leaves you exposed if rates tick up.
Most SBA lenders look for a debt-service coverage ratio of at least 1.15–1.25x. That means the unit's net operating income covers the annual debt payment with 15–25% to spare; below 1.0x the business can't cover the loan from operations, and lenders almost never approve it.
Use a standard amortization formula or any loan calculator with three inputs: the loan amount (from Item 7), the rate (model 12–15%), and the term (usually 10 years for a 7(a) without real estate). A $400K loan at 13% over 10 years is about $5,900 a month.
You have real levers before you walk: increase your down payment to shrink the loan, use ROBS to fund part of the equity and reduce borrowing, or pick a lower-capex version of the model (smaller footprint, conversion, mobile). If none of those gets you above a 1.15x DSCR in the flat scenario, the honest answer is to pass.
Not the rate directly, but the brand's track record affects approval and the projections lenders will accept. A brand with strong Item 19 data and a clean spot on the SBA Franchise Directory gives the lender confidence; a thin or volatile track record makes them haircut your projections, which can sink the DSCR math.
This page is part of VetMyFranchise. View all pages: llms.txt · llms-full.txt