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How Business Loan Repayments Are Calculated

A guide to business loan repayments, interest-only borrowing, revenue-based finance, APR, cash flow, and total cost of borrowing.

Updated May 202611 min read

What affects business loan repayments

Business loan repayments depend on the amount borrowed, interest rate, fees, term, repayment structure, security, and the lender view of risk. A business with stable revenue, good accounts, and strong cash flow may receive different terms from a seasonal or early-stage business.

The monthly payment is only one part of the decision. A business should also consider total cost, cash flow timing, affordability during quiet months, security required, personal guarantees, and whether the borrowing supports profitable growth.

Capital and interest repayments

A standard amortising loan repays capital and interest each month. Early payments include a higher interest share because the outstanding balance is larger. As the balance falls, more of each payment goes toward capital.

This structure gives a clear end date and predictable payments if the rate is fixed. It may be less flexible than a revolving facility but easier to budget for.

Interest-only repayments

With interest-only borrowing, the business pays interest during the term and repays the capital separately, often at the end. This can reduce monthly cash outflow but creates refinance or repayment risk later.

Interest-only can be useful for bridging a short-term need, but it should have a credible repayment plan. Otherwise, the business may simply delay the problem.

Revenue-based finance

Revenue-based finance, including merchant cash advances, may take repayments as a percentage of card sales or revenue. This can flex with trading levels, but the total cost can be high and harder to compare with a conventional loan.

For comparison, estimate the effective cost, expected repayment speed, and impact on daily cash flow. A flexible repayment pattern can still be expensive.

Repayment types

TypePayment patternMain risk
Capital and interestFixed or regular repayments reduce balanceMonthly affordability
Interest-onlyLower payments during termCapital still needs repaying
Revenue-based financeRepayments move with salesCost can be hard to compare
Revolving creditDraw and repay as neededBalance can remain outstanding

Total cost of borrowing

Total cost includes interest, arrangement fees, exit fees, broker fees, valuation fees, legal fees, and any required insurance or security costs. APR can help compare some products, but it may not capture every business-specific cost or operational constraint.

Worked example

A business borrows GBP 50,000 over 48 months at a fixed rate with monthly capital and interest repayments. The lender also charges an arrangement fee.

  1. Borrowing amount: GBP 50,000
  2. Term: 48 months
  3. Repayment: calculated from rate, balance, and term
  4. Total cost: all repayments + fees - original amount borrowed

The true cost is not just the monthly payment. Fees and term length can materially change the total paid.

Business borrowing scenarios

ScenarioUseful structureMain question
Buying equipmentTerm loan or asset financeWill the asset produce enough profit during the loan term?
Covering seasonal cash flowShort-term facility or overdraftCan the debt be repaid when revenue arrives?
Card-sales businessMerchant cash advanceIs the effective cost worth the flexible repayment pattern?
Property or fit-out projectSecured loan or staged financeAre delays and cost overruns affordable?
Refinancing debtConsolidation or lower-rate loanDoes total cost fall or just monthly payment?

Scenario example: interest-only risk

A business borrows GBP 80,000 interest-only for 12 months to fund stock. Monthly payments are low because the capital is not being repaid during the term. The plan is to repay the capital after the stock sells.

  1. During the term: business pays interest only
  2. At the end: GBP 80,000 capital still needs to be repaid or refinanced
  3. Risk: slower sales leave the business with a large repayment due

Interest-only borrowing can help cash flow, but the repayment plan matters more than the low monthly payment.

FAQ

What is the best business loan term?

It depends on asset life, cash flow, risk, and total cost. Longer terms reduce payments but can increase interest.

Is APR enough to compare business loans?

APR helps, but also check fees, security, repayment flexibility, and total amount payable.

What is DSCR?

Debt service coverage ratio compares cash available for debt payments with required debt payments.

Are personal guarantees common?

They can be common for small business lending, depending on lender and facility type.

Can revenue-based finance be cheaper?

Sometimes, but it should be compared carefully because the effective cost can be high.

This guide is for general information only and is not financial advice.

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