Wauvel
Finance 101

Financing options, ranked by what they actually cost

← All posts
By Blake EkelundOctober 17, 2026 · 7 min read

Small business funding is quoted in deliberately incomparable units. "A 1.28 factor rate." "A 3% fee." "$40 per $1,000 per week." None of these is an interest rate, and several of them describe costs that would be illegal to advertise as one.

The only way to compare offers is to convert them all to an annualised percentage rate. Once you do, the ranking is remarkably stable — and the gap between the cheapest and most expensive is not a few points, it is an order of magnitude.

Convert everything to an annual rate

The arithmetic that catches people out is the repayment schedule. A "3% fee" on money you repay over six months is not 3% a year, because you only have the full amount for the first payment. As you repay, the average balance falls but the fee does not.

A rough conversion: take the total cost, divide by the average balance outstanding, and annualise for the term. A $50,000 advance repaid over six months with a $6,000 fee has an average balance nearer $25,000, so it is roughly 24% for half a year — about 48% a year.

The same $50,000, five ways
SourceAs quotedTrue annualTypical use
Supplier termsnet 450%Working capital
SBA / term loan8–11%8–11%Equipment, expansion
Line of credit10–14%10–14%Seasonal gaps
Invoice factoring2–3% / 30 days25–40%Slow receivables
Merchant cash advance1.28 factor60–120%Almost never
Ordered by true annualised cost. The gap between the top and bottom is not marginal - the same money costs eleven times more at one end of this table than the other.

Match the term to the need

Cost is not the only axis. Borrowing over a term that does not match what the money is for is its own mistake, independent of rate.

A seasonal inventory buy is a three-month need — funding it with a five-year loan means paying interest for years after the stock sold. A delivery van is a five-year asset and should not be funded on a line of credit that could be called. The rule is simple: the financing should be repaid over roughly the period the thing it bought generates cash.

Line of credit

12%

on $50k for 3 months = $1,500

Factoring

32%

same money, same period = $4,000

Cash advance

85%

= $10,600

Free · no account · no card

Get your 2027 budget built from your QuickBooks — P&L, balance sheet and cash flow, in Excel.

Build my 2027 budget →

The cheapest financing is not borrowing

Before any of the above, most small businesses have meaningful funding sitting inside their own working capital. Collecting receivables a week faster, negotiating supplier terms out by thirty days, or clearing slow inventory all release cash at a cost of zero.

These are unglamorous and slower than a wire transfer, which is exactly why businesses reach for expensive credit instead. But a business that takes a 60% advance while carrying $80,000 of aged receivables and paying every supplier on receipt has not run out of money — it has run out of attention.

When speed genuinely is worth the price

Expensive money is not always the wrong answer. If a supplier offers a one-time discount worth more than the financing cost, or a piece of work will be lost without immediate materials, borrowing at 30% for six weeks can be a good trade.

The test is whether the return is specific, near-term, and larger than the cost. "We need it for cash flow" almost never passes that test — expensive credit taken to cover a general shortfall usually funds the same shortfall again next quarter, with the repayments now making it worse.

Which is the real argument for arranging a facility before you need one. The businesses that end up taking 85% money are almost never the ones that had a line of credit sitting unused.

A lender decides on four ratios you can compute yourself — our post on what a lender checks covers what to fix in the quarter before you apply.

Need your financials for a lender, a buyer or your accountant? Get the free financials pack →

See what an AI CFO says about your own numbers.

$99/mo, everything included. Free for 14 days, no card.

Meet your AI CFO →

Keep reading

Finance 101October 23, 2026 · 7 min read

Overhead allocation: charging costs to the jobs that caused them

If overhead is a lump nobody owns, every job looks more profitable than it is and the least efficient work looks the best. Here's how to push shared costs down to jobs without building a costing department.

Read it →
Finance 101October 21, 2026 · 7 min read

Deposits, retainers and progress billing: getting paid before you deliver

The cheapest working capital available to most businesses is their own customers, and the mechanism is billing structure rather than collections. Here's how deposits and progress billing change your cash curve - and how to book them correctly.

Read it →
Finance 101October 15, 2026 · 6 min read

Your P&L by month tells a story the annual one hides

An annual income statement is twelve months averaged into a single column, which is exactly the wrong shape for spotting anything. Laid out month by month, the same data shows you drift, seasonality, and the exact month a problem started.

Read it →
Finance 101October 13, 2026 · 6 min read

Bad debt: when to write off a customer

Carrying an invoice you'll never collect doesn't preserve the money - it just overstates your assets and flatters the month you booked it. Here's how to decide when a receivable is dead, what writing it off actually does, and how to stop creating more.

Read it →
Finance 101October 11, 2026 · 7 min read

Year-end tax planning: the decisions that expire December 31

Tax planning is not tax filing. Filing reports what happened; planning changes it, and only until December 31. Here are the levers still available to a small business in Q4 and the arithmetic for deciding whether to pull them.

Read it →
Finance 101October 9, 2026 · 7 min read

What "profit" means on four different reports

Your P&L, your tax return, your bank balance and your valuation will all give you a different profit number for the same year. None of them is lying. Here's what each is measuring and which one to use for which decision.

Read it →
Finance 101October 7, 2026 · 7 min read

Fixed vs. variable: why your cost structure decides your risk

Two businesses with identical revenue and identical profit can be completely different risks, depending on how much of the cost base is fixed. Here's how operating leverage magnifies both directions, and how to choose the structure that fits your volatility.

Read it →
Finance 101October 3, 2026 · 7 min read

Contribution margin: the number that decides what to sell more of

Gross margin tells you about a product. Contribution margin tells you what one more sale is worth - and once overhead is in the mix, the two rankings disagree often enough to change what you push.

Read it →
Finance 101October 1, 2026 · 6 min read

Your year-end close starts in October

Everything that makes a year-end close painful is fixable in October and unfixable in January. Here's the work to front-load now, in the order that removes the most pain later.

Read it →