How Do Business Loans Work?

A business loan works by giving your company a lump sum of capital now that you repay over time, plus a cost of borrowing — either as interest on a shrinking balance or as a fixed fee agreed up front. A lender reviews your business (its revenue, bank deposits, time in business, and often the owner's credit), decides how much risk it will take, sets an amount, a rate or fee, and a repayment schedule, then sends the funds. From that point you make scheduled payments — monthly, weekly, or daily — until the balance and its cost are paid in full.

That is the whole mechanism. Everything else — the paperwork, the underwriting logic, the difference between a bank term loan and revenue-based funding — is just variation on those two questions every lender asks: can this business repay, and what happens if it can't? Below is how each piece works, from the underwriting desk's point of view.

The core mechanism: lump sum now, scheduled repayment later

Every business loan reduces to three numbers and a calendar: how much you receive (principal), what the money costs (interest rate or a fixed factor/fee), and how you pay it back (term and payment frequency). A lender funds your account with the principal, then you return that principal plus the cost of capital across the agreed schedule.

There are two dominant ways the cost is expressed, and confusing them is where most owners get burned:

• Interest on a declining balance (amortizing loans). Traditional term loans and SBA loans work this way. You owe interest only on the principal you still hold. Pay it down faster and you pay less interest. The rate is usually quoted as an APR.
• A fixed cost agreed up front (factor rate / flat fee). Revenue-based financing, merchant cash advances, and many short-term products quote a factor rate (for example, 1.2 to 1.5) or a flat fee. The total obligation is set at funding and generally does not shrink because you paid early — the cost was priced into the deal on day one.

Neither is inherently "better." An amortizing bank loan rewards a business with long, stable, predictable cash flow. A fixed-cost revenue-based product rewards a business that needs speed, has strong deposits but imperfect credit, or wants payments that flex with sales rather than a rigid monthly nut.

How lenders actually underwrite you

Underwriting is just risk-pricing. The lender is trying to answer one question — how likely is this business to repay, and how fast can it if things go sideways? — and every document you submit feeds that judgment. The weight each factor carries depends heavily on the lender type.

The practical takeaway: a bank leads with your credit score and years of history; a revenue-based lender leads with your bank statements. If your last few months of deposits show steady, healthy revenue, a revenue-based marketplace can often approve you on the strength of that cash flow even when a bank has already declined you on credit or time-in-business.

The application-to-funding timeline, step by step

The mechanics of getting funded are more predictable than most owners expect. Here is the sequence from the desk side:

1. Application. Basic business details, ownership, and how much you want. Minutes online.
2. Documentation. A bank connects or uploads recent business bank statements (typically the last 3 to 6 months). Banks and SBA lenders also ask for tax returns, financial statements, and a business plan.
3. Underwriting. The lender verifies deposits, revenue trends, existing debt, and any negative days. This is where an offer amount, rate or factor, and term get set.
4. Offer & terms. You receive the amount, the cost of capital, the payment size, and the schedule. Read the payment frequency carefully — daily and weekly debits hit cash flow very differently than monthly.
5. Funding. Funds are wired or ACH-deposited to your business account.

Timelines split sharply by product. A bank term loan or SBA loan commonly runs several weeks to a few months. A revenue-based advance from a marketplace can move from application to funded in as little as 24 to 48 hours once statements are in, because the review centers on bank data rather than a full financial-statement audit. Speed is the trade you're making — and for a business covering payroll or seizing a time-boxed opportunity, it's often the deciding factor. For a broader map of your options, see our guide to business funding options.

How repayment works — and why frequency matters more than the rate

Owners fixate on the rate and ignore the payment schedule, which is backwards. Cash flow is destroyed by payment timing, not just cost. Three common structures:

• Fixed monthly payment (amortizing). Same amount each month; predictable; interest portion shrinks over the term. Best when revenue is stable month to month.
• Fixed daily or weekly ACH. A set amount debits automatically. Common in short-term financing. Predictable, but relentless — it hits every business day regardless of that day's sales.
• Revenue-based / percentage of sales. Payment is a percentage of your deposits, so it flexes: slower week, smaller payment; strong week, larger. This is the structure that protects a seasonal or uneven business, because the payment breathes with the cash coming in.

Before signing anything, model the payment against your slowest expected week, not your average. If the debit still clears comfortably on a soft week, the structure fits. If it only works on a good week, it's too much capital or the wrong product — renegotiate the amount down rather than hoping sales stay high.

A realistic cost comparison (example figures)

The table below uses example figures for illustration only — your actual terms depend on your revenue, deposits, and profile. It shows how the same funding need looks across three structures so you can see the trade-offs in speed, cost, and payment rhythm rather than a single "cheapest" answer.

Notice what the table is really showing: as you move down, credit and paperwork requirements ease and speed increases, while the cost of capital typically rises. You are buying access and speed with a higher fee. That's a rational trade when the capital solves a problem worth more than its cost — covering payroll, buying discounted inventory, taking a large order — and a poor trade when it's papering over a structural cash-flow leak.

Decision framework: when a business loan works — and when to avoid it

As an underwriter, I'd rather decline a deal than fund one that hurts the business. Use this as your own screen before you take any capital.

A business loan works best when:

• The capital funds something that generates or protects revenue — inventory, equipment, staff for a confirmed contract, bridging a receivable.
• You can service the payment on a slow week, not just an average one.
• The need is time-sensitive and the opportunity's value clearly exceeds the cost of capital.
• Your recent bank deposits are healthy and consistent — that's what earns approval and better terms.
• You have a defined use and a defined exit (how and when it gets repaid).

Avoid or delay financing when:

• You'd use it to cover chronic losses rather than a specific, revenue-linked purpose — debt won't fix a broken unit economic.
• The payment only clears on your best weeks.
• You can't articulate what the money buys and when it pays back.
• You're stacking a new advance on top of existing daily debits without a plan to consolidate — layered daily payments are the fastest path to a cash-flow crisis.
• A cheaper, slower option would work and you don't actually need the speed.

If you fail two or more of the "avoid" checks, the honest move is to fix the underlying issue or take less capital — not to shop for a lender who'll say yes.

Which structure fits your business

Match the product to your profile rather than chasing the lowest advertised rate:

• Strong credit, 2+ years, and time to wait? Start with a bank or SBA term loan — the lowest cost of capital and the most patient repayment.
• Strong revenue and deposits but imperfect credit, newer business, or you need funds fast? A revenue-based / MCA marketplace is built for exactly this. Approval leans on your bank deposits and revenue rather than your FICO, many lenders work with credit scores of 500+, amounts typically start around $10,000, and funding can land in 24 to 48 hours.
• Seasonal or uneven sales? Prioritize a percentage-of-sales structure so your payment shrinks in slow periods instead of straining a soft month.

A marketplace matters because a single lender only sees its own box. A marketplace runs one application past multiple funders, so a decline from one doesn't end the process — it routes you to the one whose criteria fit your deposits. No legitimate funder guarantees approval; anyone who does is a red flag. What a strong revenue-based marketplace offers is a realistic shot when banks have said no, priced to your actual cash flow. See our business funding options pillar to compare the full landscape.