Small business loans come in two structures, and which one you get depends on what you're borrowing for

An installment loan gives you a lump sum upfront — say $50,000 — and you pay it back in fixed monthly payments over a set period, usually three to ten years. Once you've paid it off, the loan is closed. A revolving credit line works like a credit card: the lender sets a maximum you can borrow, you draw what you need when you need it, and you pay interest only on what you've actually used. You can borrow again after you pay down the balance.

Most SBA loans are installment loans. The SBA 7(a) program, the most common one, structures money as a single disbursement you repay on a schedule. But some SBA products — particularly the SBA Microloan and certain lines of credit — can work as revolving credit. The structure affects how much you pay in interest, when payments start, and how flexible your access to funds is.

Key Takeaways

  • SBA 7(a) loans are installment loans: you receive the full amount at closing and make monthly payments over three to ten years.
  • Revolving credit lines let you borrow up to a limit, repay, and borrow again, paying interest only on the amount you use.
  • Installment loans have predictable payments and lower interest rates but less flexibility if your cash needs change.
  • Revolving lines have higher interest rates but let you access money as you need it without reapplying.

How installment loans work in the SBA 7(a) program

When you close on an SBA 7(a) loan, the lender disburses the full loan amount to you or directly to a vendor (if you're buying equipment or real estate). You then begin repaying the loan in equal monthly installments. The repayment term depends on what the money is for: equipment loans typically run five to ten years, real estate loans up to 25 years, and working capital loans five to ten years.

Your monthly payment stays the same throughout the life of the loan. This means your cash flow is predictable — you know exactly what you owe each month. Interest rates on SBA 7(a) loans are usually lower than on revolving credit because the lender knows the full amount at risk and the exact repayment schedule. The SBA guarantees a portion of the loan (typically 75 to 90 percent), which also brings the rate down.

The trade-off is that you cannot borrow more money under the same loan once it closes. If your business needs additional capital six months in, you would have to explore for a separate loan.

How revolving credit lines work for small businesses

A revolving credit line sets a maximum amount you can borrow — say $25,000. You can draw from that line whenever you need cash, up to the limit. You pay interest only on what you've drawn, not on the full credit line. As you repay the borrowed amount, that money becomes available to borrow again.

Revolving lines are useful for managing seasonal cash flow or unexpected expenses. If your business has slow months followed by busy months, you can draw during slow periods and repay during busy ones. You're not paying interest on money sitting unused.

Interest rates on revolving lines are typically higher than on installment loans because the lender doesn't know in advance how much you'll borrow or when you'll repay it. The SBA does offer some revolving products, but they are less common than installment loans. The SBA Microloan program can structure credit as a line of credit, though many borrowers use it as an installment loan instead.

Comparing monthly payments and total interest cost

With an installment loan, your payment is fixed from day one. If you borrow $50,000 at 8 percent over five years, your monthly payment is roughly $1,010, and you know that amount will not change. You pay a set total amount in interest over the life of the loan.

With a revolving line, your payment varies based on how much you've borrowed and what the lender requires. Some lines require you to pay the full balance monthly; others let you pay a percentage of what you owe. Interest accrues daily on your outstanding balance, so your total interest cost depends on how much you borrow and how long you carry the balance.

If you borrow the full $25,000 line at 12 percent and carry it for a year, you'll pay roughly $1,500 in interest. But if you only borrow $10,000 for three months, you'll pay roughly $300. The total cost is lower if you use less of the line and repay faster, but higher if you carry a large balance for a long time.

When lenders offer each type

Lenders offer installment loans when you're financing a specific purchase or project: buying equipment, renovating a location, purchasing inventory, or covering payroll for a defined period. The lender can tie the loan to the asset or the project, which reduces their risk.

Lenders offer revolving lines when you need flexible access to cash for ongoing operations. This might include managing cash flow gaps, covering seasonal dips, or handling unexpected expenses. Revolving lines are also common for businesses with variable revenue or those that need to make frequent small purchases.

Some lenders offer both. You might have a $50,000 installment loan for equipment and a $10,000 revolving line for working capital. The SBA allows this combination on certain loan programs.

How to know which structure you need

Ask yourself whether you're borrowing for a one-time need or an ongoing one. If you're buying a delivery truck, that's a one-time purchase — an installment loan fits. If you're covering payroll fluctuations or stocking inventory as orders come in, that's ongoing — a revolving line may fit better.

Consider your cash flow predictability. If your revenue is steady and you can forecast expenses, an installment loan's fixed payment is easier to budget. If your revenue swings month to month, a revolving line lets you borrow only when you need it.

Think about whether you might need more money later. If you're confident $50,000 is all you'll need for the next five years, an installment loan works. If you think you might need additional capital but aren't sure when, a revolving line gives you that flexibility without reapplying.

Your lender will also influence the choice. Some lenders specialize in installment loans; others focus on lines of credit. The SBA 7(a) program is primarily installment-based, so if you're pursuing that program, you're likely getting an installment structure.

Frequently Asked Questions

Can I pay off an installment loan early without a penalty?

Most SBA 7(a) loans allow early repayment without penalty. Check your loan documents or ask your lender, because some loans have prepayment restrictions, though they are uncommon. Paying early reduces the total interest you pay.

What happens if I don't use the full revolving credit line?

You pay interest only on what you borrow. If your credit line is $25,000 but you only draw $5,000, you pay interest on $5,000. The unused portion costs you nothing. This is why revolving lines work well for businesses with variable needs.

Can I convert an installment loan to a revolving line later?

No, not directly. An installment loan stays an installment loan. If you later need a revolving line, you would explore for a separate credit line. Some lenders let you explore for both at the same time.

Do revolving lines have a set repayment term like installment loans?

Revolving lines typically have an annual review or renewal date, but no fixed end date like an installment loan. As long as you make payments and stay in good standing, the line remains open. The lender can close it or reduce the limit if your business circumstances change.

Which type of loan is easier to get approved for?

Installment loans are generally easier to get approved for because the lender can tie the loan to a specific asset or project. Revolving lines require the lender to assess your ongoing ability to repay, which can be harder to predict. Both require a business plan and financial statements.