Cash flow gaps are not automatically a sign your business is failing. In many cases, they are a timing problem: payroll hits on Friday, a major client pays on net-45, inventory arrives late, or your busy season ends before your bills do. That said, chronic cash shortfalls can signal something deeper like weak margins, slow collections, or expenses that no longer match revenue.
When you need working capital fast, two common options show up: a business line of credit and a short-term loan. They can both solve the immediate problem, but their pricing and repayment structure are different enough that “cheaper” depends on how you will use the money, how quickly you repay, and who is offering the product.
Below is how I would think about the decision if we were sitting across the table together: what each product is best for, where costs hide, and how to estimate total borrowing cost for your specific gap.
Quick answer: which is usually cheaper?
Directional rule of thumb (not a promise): pricing varies a lot by lender type and borrower profile. A bank or credit union LOC can look nothing like an online LOC, and a short-term term loan can be very different from factor-rate style products.
A business line of credit is often cheaper when you:
- need money in smaller chunks (not all at once)
- expect to repay quickly, then borrow again
- have recurring gaps (inventory cycles, seasonal swings, slow-paying customers)
A short-term loan can be cheaper when you:
- need a lump sum immediately
- can handle fixed payments on a set schedule
- are financing a specific expense (bulk inventory buy, equipment repair) with a clear payoff plan
The catch is that a low-rate headline does not tell you the total cost. With both products, the repayment schedule and fee structure can matter as much as the APR.
How each option works
Business line of credit
A line of credit (LOC) is a revolving pool of funds. You can draw what you need, repay, and draw again up to your limit. Interest is typically charged only on the amount you draw, not the full limit.
- Best for: recurring, short gaps
- Cash flow feel: flexible, like a business credit card. For well-qualified borrowers, LOCs are often lower cost and higher limit, but not always.
- Common structure: variable interest rate, monthly interest charges, sometimes weekly payments depending on lender
Short-term loan
A short-term loan gives you a lump sum upfront, then you repay on a fixed schedule over a short horizon, often 3 to 24 months.
- Best for: one-time needs with a defined budget
- Cash flow feel: predictable but less flexible
- Common structure: fixed payments (often weekly and sometimes daily with online lenders), sometimes an origination fee, and pricing that may be amortized interest, simple interest, or precomputed and factor-style payback
What drives the true cost
If you remember nothing else, remember this: borrowing cost is a math problem plus a behavior problem. The math is rates and fees. The behavior is how long you keep a balance and how fast you repay.
1) Interest often works differently than people assume
Lines of credit: You generally pay interest on the outstanding balance. If you draw $20,000 and pay it down to $5,000 two weeks later, you only pay interest on what you actually used, for the time you used it.
Short-term loans: Many are amortizing or simple-interest term loans where cost depends on the repayment schedule. Others use precomputed interest or factor-style pricing where early payoff may not reduce the total cost much. Do not assume you will save money by paying early unless the contract is explicit about it.
2) Fees can quietly beat the rate
Watch for:
- Origination fees (common with loans, sometimes with LOCs)
- Draw fees (some LOCs charge per advance)
- Maintenance or annual fees (LOCs more likely)
- Late fees (both)
- Prepayment penalties or precomputed payoffs (more common with certain short-term products)
3) Payment frequency changes both cash flow and effective cost
Many online short-term loans use daily or weekly payments. That can make a loan feel expensive even when the stated rate looks tolerable, because it pulls cash out of your operating account constantly. A LOC is more commonly monthly, though some lenders also use weekly schedules.
4) Variable vs fixed: certainty has value
Many LOCs have variable rates. In a rising-rate environment, your cost can climb over time. Short-term loans are often fixed, which is easier to plan around. The cheaper option can be the one that keeps you from needing a second emergency loan later.
5) Approval, collateral, and guarantees affect your real risk
Cost is not just interest. It is also what you have to pledge. Many LOCs and short-term loans require a personal guarantee. LOCs are often secured by business assets (sometimes a blanket lien, and in some cases tied to accounts receivable). Bank products may require stronger credit, financials, and time in business, while online lenders may approve faster at a higher price. Those differences change what is realistic, not just what looks cheapest on paper.
Use cases: inventory, payroll, seasons
Inventory delays and supplier payments
Best fit: line of credit if you regularly float inventory between purchase order and customer payment. You can draw to pay the supplier, then repay as the inventory sells.
When a short-term loan can be cheaper: If you are making a one-time bulk buy at a discount and you know exactly when sales revenue will come in, a fixed loan can be a clean match, especially if the LOC has steep draw fees or your limit is too low.
Payroll timing gaps
Best fit: line of credit for short, predictable timing gaps like net-30 or net-45 receivables. Payroll is the classic reason businesses keep a LOC open, even if they hate debt. It is less about borrowing a lot and more about never missing payday.
Watch-out: if you are using financing to cover payroll because margins are structurally too thin, neither product is a long-term fix. That is a pricing, staffing, or collections problem that needs attention.
Seasonal revenue dips
Best fit: line of credit when you borrow and repay in cycles and your off-season gap is modest.
Best fit: short-term loan when you need a defined bridge amount for a defined period, and you want fixed payments to force a payoff before next season. Some founders like that guardrail because it prevents a line of credit from becoming permanent debt.
Estimate total cost
To compare apples to apples, estimate total dollars paid, not just the interest rate.
Step 1: Write down your borrowing behavior
- How much do you need right now?
- Will you need additional draws next month?
- How quickly can you repay once cash comes in?
Step 2: Ask these three questions
- What fees will I pay on day one? (origination, draw, closing, maintenance, annual)
- How is pricing calculated? (daily simple interest, amortized schedule, precomputed interest, factor-style total payback)
- What is the payment schedule? (daily, weekly, monthly, and any minimum payment or minimum draw rules)
Step 3: Back-of-the-napkin math
Use a rough cost check like this:
- Line of credit rough cost = (average balance) × (annual rate) × (time outstanding in years) + fees
- Short-term loan rough cost = (total of all payments you will make) + fees − (cash you actually receive)
Important detail: if the lender deducts origination from proceeds, your “amount borrowed” and “cash received” are not the same. Use cash received for real cost comparisons.
A quick numeric example
Assume you need $20,000 to cover a 30-day gap.
- LOC example: Draw $20,000 at 12% APR, repay in 30 days, $0 draw fee. Rough interest: $20,000 × 0.12 × (30/365) ≈ $197.
- Loan example: Borrow $20,000 with a 6-month term, 10% origination fee deducted from proceeds (you receive $18,000), and total payback of $23,000. Rough cost: $23,000 − $18,000 = $5,000.
This is not a universal comparison, just a reminder that term, fees, and payback method can dominate the headline rate.
If you are offered factor-rate pricing (for example, repay $13,000 on a $10,000 advance), focus on two things: total payback and payment schedule. Faster repayment can make the annualized cost much higher than it appears.
Red flags to watch
- Borrowing longer than planned. A LOC meant for a 30-day gap can get costly if you carry a balance for 9 months.
- Stacking products. Taking a loan to make payments on another loan is a flashing red light that cash flow needs a deeper fix.
- Payment frequency that strains operations. Even a reasonable total cost can be dangerous if it creates constant overdraft risk.
- Requirements you cannot meet. Some LOCs may require a periodic “cleanup,” meaning the balance must hit zero for a set period (for example, 30 days once per year). If that is unrealistic, you can face fees, default risk, or a reduced limit.
- Using debt to cover margin problems. Financing can bridge timing. It cannot permanently patch unprofitable pricing.
Choose in 5 minutes
If you are deciding quickly, use this checklist:
Choose a line of credit if
- your gap repeats (receivables cycle, seasonal swings)
- you only need part of the money at a time
- you can repay quickly when cash arrives
- flexibility matters more than a fixed payoff date
Choose a short-term loan if
- you need a lump sum today
- you want predictable fixed payments
- you have a clear payoff plan and timeline
- the LOC fees, limit, or variable rate make the line unattractive
Lower the cost either way
- Borrow the minimum that solves the timing problem. Overborrowing is one of the most common expensive mistakes.
- Shorten the time outstanding. Even a few weeks can materially change total interest and reduce risk.
- Use financing to stabilize, then fix the root cause. Improve invoicing, tighten collections, adjust deposit terms, or renegotiate supplier terms.
- Ask for fee reductions. Banks and credit unions can sometimes negotiate origination or annual fees for strong customers.
- Build a cash buffer on purpose. Once the gap is bridged, redirect a slice of cash flow into an operating reserve so you borrow less next cycle.
FAQ
Is a business line of credit always cheaper than a short-term loan?
No. A line of credit is often cheaper for recurring short gaps because you only pay interest on what you draw. But a short-term loan can be cheaper when you need a one-time lump sum and the LOC has high fees, a low limit, or a variable rate that makes costs unpredictable. Lender type and your credit profile can flip the result.
What matters more than APR?
Repayment structure and fees. Daily or weekly payments can strain cash even if the nominal rate looks fine. Origination, draw, and maintenance fees can also change the true cost materially. Also ask whether pricing is interest-based or factor-based, since factor-style payback can be deceptively expensive when repaid quickly.
Can I pay off a short-term loan early to save money?
Sometimes. It depends on whether interest is calculated daily and whether there is a prepayment penalty, precomputed interest, or a fixed total payback. Before signing, ask for an example payoff schedule showing what you would owe if you repay early.
What if I am using financing to cover payroll every month?
A line of credit can be a normal tool for timing gaps, but monthly payroll borrowing can also indicate a structural cash flow problem. Consider tightening receivables, revisiting pricing and margins, adjusting payroll timing where possible, or requiring deposits for large orders.
Bottom line
If your cash flow gap is a recurring timing issue, a business line of credit is often the cheaper, more flexible tool. If your need is a one-time lump sum and you value a predictable payoff, a short-term loan can be the cleaner and sometimes cheaper option.
The best choice is the one that solves the gap and leaves your day-to-day cash flow stable enough that you are not back in the same spot next month.
