If you carry a balance on a variable-rate business loan, your interest bill just went up — automatically, with no new paperwork and no phone call from your lender. On September 16, 2026, the Federal Reserve raised its benchmark rate for the first time in more than three years, and the prime rate your loans are priced against moved the very next morning.
Here is what changed, how it flows through to your line of credit, your SBA loan, and your business credit cards — and what to do before the next hike lands.
What the Fed Just Did
The Federal Open Market Committee voted unanimously, 12–0, to raise the target range for the federal funds rate by a quarter of a percentage point (25 basis points), from 3.5–3.75% to 3.75–4%. It is the first increase since 2023, ending a stretch in which policymakers held rates steady at every meeting so far in 2026.
The reason is stubborn inflation. An August CPI report released September 11 showed price pressures running hotter than expected, and a widening conflict in the Middle East has pushed oil prices higher, lifting inflation expectations further. Markets got the message well before the announcement: traders were pricing in roughly a 90% chance of a hike, and stocks still fell on the news, with the Dow dropping more than 600 points while the 10-year Treasury yield settled just above 5%.
One more thing to note: policymakers signaled they see one more increase this year — markets are betting it arrives in December, which would take the range to 4–4.25% — and no moves higher in 2027. So this is very likely the start of a short tightening sequence, not a one-off.
Why a Quarter Point Reaches Your Business So Fast
The federal funds rate is the rate banks charge each other overnight. You never borrow at it directly. What matters to you is the prime rate — the benchmark banks use to price small-business loans, lines of credit, and credit cards. Prime moves in lockstep with the Fed, usually within a day.
That is exactly what happened: major banks raised prime from 6.75% to 7.00%, effective September 17, 2026. Every variable-rate product priced as "prime plus a margin" just got 0.25 percentage points more expensive. On a $100,000 drawn balance, that is $250 more in interest per year. On a $500,000 balance, it is $1,250 — and if December brings another quarter point, double those numbers.
Fixed-rate debt you already hold is unaffected. But anything variable — and most new borrowing — reprices quickly.
What It Means for Your Business Line of Credit
A business line of credit is usually the first product to feel a hike. Most bank lines carry variable rates set as prime plus a margin based on your creditworthiness, and the rate typically resets monthly. Bank lines of credit have recently averaged roughly 7–8% APR, with well-qualified borrowers on secured lines paying as little as prime plus 1.75–3%.
With prime at 7.00%, a line priced at prime plus 2% now costs 9.00%, up from 8.75%. That increase shows up in your next monthly interest charge with no action required from you or the bank.
Three practical implications:
- Outstanding draws cost more starting now. Interest accrues daily on your drawn balance, so the higher rate begins biting immediately.
- Your borrowing capacity may shrink in real terms. If your line has a payment-based covenant or you size draws against cash flow coverage, the same draw now consumes more of your monthly budget.
- The undrawn portion is still free optionality (aside from any annual or draw fees). You pay interest only on what you use, which makes an untapped line cheaper insurance than it looks — but drawing it just got pricier.
If you were planning a large draw for inventory or a seasonal build-up, run the numbers at 7.00% prime — and at 7.25%, in case December delivers — before you pull the trigger.
What It Means for Your SBA 7(a) Loan
SBA 7(a) loans, the flagship small-business lending program, are overwhelmingly variable-rate, priced off prime (or the SBA Optional Peg Rate) plus a spread the SBA caps by loan size and maturity. Typical 7(a) rates currently run about 10–13.5%.
The caps matter because they move mechanically with prime:
- Loans over $350,000: maximum of prime plus 3.0% — now 10.00%, up from 9.75%.
- Smaller loans carry higher maximum spreads, up to prime plus 6.5% — now 13.50%.
If you already have a variable-rate 7(a) loan, your lender will adjust your rate at the next reset date specified in your note — often monthly or quarterly — and your payment will rise accordingly. This is contractual, not negotiable after the fact. Check your loan agreement for the reset frequency so the higher payment does not surprise your cash forecast.
If you are shopping for a 7(a) loan now, two notes. First, the rate you are quoted today already reflects the new prime, so compare offers on the spread, not just the headline rate — the spread is the part the lender controls. Second, consider whether an SBA 504 loan fits your need instead: its debenture portion carries a fixed rate tied to Treasury bonds (recently around 6–7%), which insulates long-lived assets like real estate and heavy equipment from further hikes. The trade-off is that 504 funds are restricted to fixed-asset purchases, not working capital.
What It Means for Your Business Credit Cards
Business credit cards carry the highest rates in your capital stack — recently averaging just over 21% APR — and they are almost all variable-rate products tied to prime. A 25-basis-point Fed hike flows through to your card APR within one or two billing cycles.
In absolute dollars, the increase looks small: on a $20,000 revolving balance, a quarter point adds about $50 a year. But that framing understates the risk, because card balances compound at 21%+, and card issuers reprice existing balances, not just new purchases. With another hike likely in December, a balance you carry for months keeps getting more expensive while you hold it.
The hierarchy of responses, in order of payoff:
- Pay statement balances in full to stay inside the grace period, where the APR is irrelevant.
- If you revolve, pay down card balances before cheaper debt. Every dollar shifted from a 21% card to a 9% line saves roughly 12 cents a year.
- Do not open a 0% intro-APR card to outrun the hikes unless you have a payoff plan. Twelve months at 0% helps only if the balance is gone before the revert rate — typically 17–25% variable — kicks in.
What to Do Before the Next Hike
Markets expect one more quarter-point increase in December. That gives you roughly three months to reposition. Work through this checklist in order:
1. Inventory every variable-rate balance you carry
List each loan, line, and card with its current rate, reset date, and balance. Most owners underestimate how much of their debt floats. Anything priced off prime — lines of credit, variable 7(a) loans, credit cards, some equipment loans — belongs on this list.
2. Model your payments at 4–4.25% fed funds
Add another 25 basis points to every variable rate and recompute monthly payments. If the December hike arrives, prime goes to about 7.25%, and a prime-plus-2% line costs 9.25%. Make sure your cash flow forecast for Q1 2027 reflects that, not today's rates.
3. Accelerate paydown of the most expensive floating debt first
Rank balances by rate, not by balance size. Business credit cards at 21%+ come first, then unsecured online term loans, then bank lines and 7(a) debt. With rates rising, the return on every dollar of paydown rises too — paying down a 9% line today earns you a risk-free 9%, and 9.25% after December.
4. Lock in fixed rates on debt you will carry for years
If you will carry a balance for several years — an owner-occupied building, major equipment — a fixed rate removes the guessing. Compare an SBA 504 debenture, a fixed-rate conventional term loan, or a fixed-rate refinance of a variable note against your modeled floating cost through 2027. Do not pay a large prepayment penalty to fix a rate unless the math clears it within 18 months.
5. Revisit the hurdle rate on planned investments
A higher cost of capital raises the bar for every project. If you approved equipment purchases or expansion plans assuming 2025-era borrowing costs, rerun the return math at current rates. Projects with thin margins may now destroy value on borrowed money — better to learn that from a spreadsheet than from a loan statement.
6. Keep your cash buffer intact
Rising rates tempt owners to drain reserves to pay down debt. Resist going below your floor — typically two to three months of operating expenses. A paid-down line can be redrawn in an emergency only if the bank does not cut the commitment; cash in your account has no covenants.
Mistakes to Avoid When Rates Rise
- Assuming fixed means fixed forever. Balloon loans and loans with fixed periods that reset (common in commercial real estate) reprice at maturity. Know your reset dates.
- Refinancing variable into variable to "save" a quarter point. Chasing a slightly lower spread while staying floating just resets the clock — and origination fees can exceed a year of savings.
- Ignoring the rate on autopay. If your 7(a) payment rises and your autopay covers only the old amount, you could fall short without noticing. Verify payment amounts after each reset.
- Treating the December hike as certain. Markets expect it, but one soft inflation print could cancel it. Position for the hike; do not bet the business on it.
Keep Your Borrowing Costs Visible
Rate hikes punish businesses that cannot see their own debt clearly. If your interest expense lives in a shoebox of statements, you will feel each increase months after it hits instead of planning for it in advance.
That is a bookkeeping problem with a bookkeeping solution: record every loan and line as its own liability account, book interest separately from principal with each payment, and reconcile monthly so a reset-driven payment change shows up the moment it happens — the documentation walks through setting up exactly this kind of loan tracking. Beancount.io provides plain-text accounting that gives you complete transparency and control over your financial data — no black boxes, no vendor lock-in. Get started for free and see why developers and finance professionals are switching to plain-text accounting.
