Most contractors use both a credit card and a line of credit, and plenty use them backwards. The card ends up funding materials and payroll gaps it was never priced to carry, while the line sits unused. The two tools solve different problems, and matching each expense to the right one is the whole game.
What each tool is built for
A business credit card is a payments tool with a short interest-free float. Used well, you pay it off in full each month and it costs you nothing, and it gives you clean expense records per job or per employee.
A business line of credit is a borrowing tool. You draw what you need, pay interest only on the outstanding balance, and repay and redraw as pay applications clear. It's designed to carry money for weeks or months, which is exactly what construction cash flow demands.
The distinction that matters: a card is cheap for days and expensive for months. A line is the reverse.
Side by side
| Business credit card | Business line of credit | |
|---|---|---|
| Best for | Small, frequent purchases you'll pay off within the statement cycle | Payroll float, materials and gaps between pay apps |
| Cost of carrying a balance | Typically a high variable APR on the whole balance, often well above a line's rate | Interest on the drawn amount; some lines add draw, annual or maintenance fees |
| Interest-free float | Yes, through the grace period if paid in full | Generally no |
| Typical limits | Often a few thousand to tens of thousands | Often larger, sized to receivables or revenue |
| Who accepts it | Vendors that take cards, often with a processing fee on their side | Anyone: you draw cash and pay by check or ACH |
| Underwriting | Fast and credit-based, often with a personal guarantee | Slower: bank statements, financials, sometimes an AR aging or WIP schedule |
Specific rates and fees move with the market and with your file, so we're not quoting numbers here. Ask for the all-in cost, including every fee, in writing before you choose either one.
The test: how long will the money be out?
For any expense, ask one question: when does the cash come back in?
- Back in under about 30 days, and you can pay the full statement: the card is the efficient choice. Fuel, small tools, permit fees, software, a supply run.
- Back in 30 to 90 days: the line. Payroll for a job you've billed but haven't been paid on, bulk materials, a subcontractor invoice you're floating.
- Back in more than 90 days, or only when a project closes out: neither. Retainage and long-lived equipment need longer-term money. See sizing the line you actually need and equipment financing vs. leasing.
A worked example
Illustrative numbers, not a quote. A remodeling contractor buys $18,000 of materials for a job and bills the customer at the end of the month, with payment arriving about 45 days later.
| Path | What happens | Result |
|---|---|---|
| Put it all on a card | The statement closes and payment is due before the customer's check arrives, so roughly $18,000 carries a balance for a month or more | Interest at the card's APR on the full balance |
| Draw from a line | Draw $18,000, pay the supplier, repay when the customer pays 45 days later | About six weeks of interest at the line's rate, plus any draw fee |
| Split it | Card for small purchases paid in full; line for the bulk materials | Rewards and float on the small items, lower carrying cost on the big one |
Run the arithmetic with your own rates. The pattern is consistent: the longer the gap, the less the card's float helps and the more the line's lower rate matters.
What lenders look at
Cards are approved quickly on credit, and issuers often want a personal guarantee. A line takes more paperwork: business bank statements, tax returns, interim financials and, for larger contractor lines, an accounts receivable aging or a WIP schedule. If you've been using a card as a line, your statements show a lender how you actually manage cash. We cover how those files are read in what lenders actually check.
No one can promise approval, a limit or a rate before seeing your file, and you should be wary of anyone who does.
Common mistakes
- Funding payroll on a card. Payroll recurs every week and the payback arrives monthly or slower. It's the most common way a card turns into expensive debt.
- Letting the line sit idle while cards carry balances. If you have both, drawing on the line to pay a card down is often cheaper, but check the terms first.
- Taking a cash advance on a card for working capital. Card cash advances usually carry a fee and begin accruing interest immediately, with no grace period.
- Stacking merchant cash advances on top. Daily or weekly debits against monthly pay apps drain the cash you were trying to bridge.
- Applying in a crunch. A line is easier to get while the numbers are good. Set it up before you need it, not the week payroll is short.
The short version
- Use the card for small, fast-turn purchases you pay off in full every cycle.
- Use a line for payroll and materials that wait on pay applications.
- Use longer-term money for retainage and equipment.
- Compare all-in cost in writing, with every fee included.
- Set the line up before the big job, not during it.
Common questions
Is a line of credit better than a business credit card for a contractor?
For carrying a balance, usually yes: a line is built for payroll and materials that wait weeks on a pay application, and it generally costs less than card interest. For small purchases you pay off each month, a card's float and rewards make it the better tool. Many contractors use both.
Can I use a business credit card to cover payroll?
You can, but it's usually an expensive way to do it. Payroll recurs every week, while the revenue it supports arrives weeks later, and carrying that balance at a card APR adds up fast. A line of credit, or factoring on slow-paying invoices, usually fits better.
How hard is it to get a contractor line of credit?
It takes more documentation than a card: bank statements, tax returns, financials and often an AR aging or WIP schedule. Lenders look at cash flow and how well you track job costs. Approval, limits and pricing depend on your file, and no one can guarantee them in advance.
Does using a credit card hurt my chances of getting a line of credit?
It can if balances are high relative to limits, because utilization affects the credit scores lenders review. Paying cards off each cycle keeps utilization low and preserves your options when you apply.