Click For Your Loan Options
Business Loan
Options

See how the balance reduces

Business loan amortisation calculator

See every repayment split between interest and capital. Add a regular monthly overpayment to estimate how much sooner a business loan could be cleared and how much interest it could save.

Start calculating ↓

Free to use · No credit search · GBP estimates

Finance professional reviewing a printed repayment spreadsheet at a desk
An amortisation schedule separates interest from capital repaid each month.

Your assumptions

Calculate the cost

Results update as you edit. Starting figures are examples, not lender offers.

Nominal annual rate; not APR.
12 months = 1 year.
Paid separately, not financed or deducted from the advance.
On top of the scheduled repayment; assumes no overpayment charge.

Your illustrative estimate

Monthly repayment

£1,062.35

60 monthly payments. Final instalment may differ.

Loan amount
£50,000.00
Total interest
£13,741.13
Upfront fees
£0.00
Total paid, including fees
£63,741.13
Final monthly payment
£1,062.35

Regular extra payments save an estimated £0.00 in interest and 0 months. Contractual charges are excluded.

No application or credit search. No personal details needed. Estimates assume on-time payments and an unchanged rate; lender rounding, daily interest and contractual fees can differ.

Compare loan terms

Same amount and rate. Entered fees stay the same. Your extra monthly payment is included.

Illustrative comparison of repayment costs
ScenarioMonthly paymentInterestTotal incl. feesEnd balance
48 months£1,268.13£10,870.20£60,870.20£0.00
60 months£1,062.35£13,741.13£63,741.13£0.00
72 months£926.29£16,693.02£66,693.02£0.00
View the full monthly repayment schedule

Upfront fees are separate from the monthly rows. Any final capital or accrued-interest balance is payable in addition to the last monthly payment.

Monthly opening balance, payment, interest, capital repaid and closing balance in GBP
MonthOpening balancePaymentInterestCapital repaidClosing balance
1£50,000.00£1,062.35£416.67£645.69£49,354.31
2£49,354.31£1,062.35£411.29£651.07£48,703.25
3£48,703.25£1,062.35£405.86£656.49£48,046.76
4£48,046.76£1,062.35£400.39£661.96£47,384.79
5£47,384.79£1,062.35£394.87£667.48£46,717.31
6£46,717.31£1,062.35£389.31£673.04£46,044.27
7£46,044.27£1,062.35£383.70£678.65£45,365.62
8£45,365.62£1,062.35£378.05£684.31£44,681.32
9£44,681.32£1,062.35£372.34£690.01£43,991.31
10£43,991.31£1,062.35£366.59£695.76£43,295.55
11£43,295.55£1,062.35£360.80£701.56£42,594.00
12£42,594.00£1,062.35£354.95£707.40£41,886.59
13£41,886.59£1,062.35£349.05£713.30£41,173.30
14£41,173.30£1,062.35£343.11£719.24£40,454.06
15£40,454.06£1,062.35£337.12£725.24£39,728.82
16£39,728.82£1,062.35£331.07£731.28£38,997.54
17£38,997.54£1,062.35£324.98£737.37£38,260.17
18£38,260.17£1,062.35£318.83£743.52£37,516.65
19£37,516.65£1,062.35£312.64£749.71£36,766.94
20£36,766.94£1,062.35£306.39£755.96£36,010.98
21£36,010.98£1,062.35£300.09£762.26£35,248.72
22£35,248.72£1,062.35£293.74£768.61£34,480.10
23£34,480.10£1,062.35£287.33£775.02£33,705.08
24£33,705.08£1,062.35£280.88£781.48£32,923.61
25£32,923.61£1,062.35£274.36£787.99£32,135.62
26£32,135.62£1,062.35£267.80£794.56£31,341.06
27£31,341.06£1,062.35£261.18£801.18£30,539.89
28£30,539.89£1,062.35£254.50£807.85£29,732.03
29£29,732.03£1,062.35£247.77£814.59£28,917.45
30£28,917.45£1,062.35£240.98£821.37£28,096.08
31£28,096.08£1,062.35£234.13£828.22£27,267.86
32£27,267.86£1,062.35£227.23£835.12£26,432.74
33£26,432.74£1,062.35£220.27£842.08£25,590.66
34£25,590.66£1,062.35£213.26£849.10£24,741.56
35£24,741.56£1,062.35£206.18£856.17£23,885.39
36£23,885.39£1,062.35£199.04£863.31£23,022.08
37£23,022.08£1,062.35£191.85£870.50£22,151.58
38£22,151.58£1,062.35£184.60£877.76£21,273.82
39£21,273.82£1,062.35£177.28£885.07£20,388.75
40£20,388.75£1,062.35£169.91£892.45£19,496.31
41£19,496.31£1,062.35£162.47£899.88£18,596.42
42£18,596.42£1,062.35£154.97£907.38£17,689.04
43£17,689.04£1,062.35£147.41£914.94£16,774.10
44£16,774.10£1,062.35£139.78£922.57£15,851.53
45£15,851.53£1,062.35£132.10£930.26£14,921.27
46£14,921.27£1,062.35£124.34£938.01£13,983.27
47£13,983.27£1,062.35£116.53£945.83£13,037.44
48£13,037.44£1,062.35£108.65£953.71£12,083.73
49£12,083.73£1,062.35£100.70£961.65£11,122.08
50£11,122.08£1,062.35£92.68£969.67£10,152.41
51£10,152.41£1,062.35£84.60£977.75£9,174.66
52£9,174.66£1,062.35£76.46£985.90£8,188.77
53£8,188.77£1,062.35£68.24£994.11£7,194.65
54£7,194.65£1,062.35£59.96£1,002.40£6,192.26
55£6,192.26£1,062.35£51.60£1,010.75£5,181.51
56£5,181.51£1,062.35£43.18£1,019.17£4,162.33
57£4,162.33£1,062.35£34.69£1,027.67£3,134.67
58£3,134.67£1,062.35£26.12£1,036.23£2,098.44
59£2,098.44£1,062.35£17.49£1,044.87£1,053.57
60£1,053.57£1,062.35£8.78£1,053.57£0.00

What is business loan amortisation?

Amortisation is the gradual repayment of a debt. On a conventional fixed-rate repayment loan, each payment covers interest due for the month and uses the remainder to reduce the capital balance. At the start, more of the payment tends to go towards interest because the outstanding balance is larger.

This calculator uses monthly interest on a reducing balance and a level contractual payment. The schedule shows opening balance, payment, interest, capital repaid and closing balance for each month. It is also useful if you searched for an amortization calculator using the US spelling; the calculations here are in pounds sterling.

Model a regular monthly overpayment

Enter an extra monthly amount to pay on top of the normal instalment. The tool applies it to reduce principal after that month's interest, maintains the original scheduled payment and shortens the term. It stops when the loan is paid off and caps the last payment at the remaining debt plus interest.

The savings are compared with the same loan without overpayments. This assumes the lender allows the extra payments, applies them promptly to capital and does not impose a charge. Some agreements instead recalculate future instalments or restrict overpayments, so the forecast needs to match your contract.

Keep working-capital needs in view

Reducing debt can save interest, but spare cash may also be needed for tax, stock, maintenance or customer payment delays. An overpayment plan should preserve an adequate operating reserve and account for other borrowing commitments.

Before sending extra funds, ask for the lender's overpayment policy and whether it reduces the term or the monthly payment. A formal settlement figure can include accrued interest and contractual charges that a simple calculator cannot infer. The schedule here is an illustration rather than a settlement statement.

  • Compare the no-overpayment and overpayment interest totals.
  • Check the final payment and shortened payoff month.
  • Confirm any limits or early-repayment charges.
  • Keep enough cash for foreseeable operating commitments.
Business partners reviewing cash-flow papers with a calculator
Check available cash before making regular extra loan payments.
Business owner checking financial records beside folders and a calculator
Compare the modelled balance with the lender's actual statements.

Common questions

Before you compare finance

Does the calculator shorten the term or reduce instalments?

It keeps the original regular repayment and adds the entered overpayment, shortening the payoff period. It does not recast the loan to lower later contractual instalments.

Can I download the amortisation schedule?

Yes. The CSV includes the inputs, monthly opening and closing balances, payment, interest and capital repaid. Fees are shown separately as an upfront amount.

Why could the lender's balance differ?

Daily interest, payment dates, fees, missed payments and contractual rounding can change the balance. Compare the estimate with the lender's statements and obtain a formal quote for settlement.

Related funding guides

Business term loan structure →Compare business funding options →

Sources and calculation assumptions

Reviewed 11 October 2026. Independent educational tool; calculations are estimates, not a finance offer or affordability assessment. Annual-rate tools use a nominal rate divided by 12. The bridging tool uses the entered monthly rate. All fees are paid upfront. No payment holidays, taxes, insurance or default charges are included.

Your next step

Turn the estimate into a funding discussion

Review the repayment budget, then tell us about your business and funding requirement through the existing enquiry form.

Check your funding options →