Business Loan & Equipment Finance Calculator

What this tool does

This business loan and equipment finance calculator turns each finance quotation into the four numbers that decide whether a deal is good: the payment, the total interest, the effective annual rate once fees are included, and the total cost of ownership. Enter one row per offer — a bank term loan, an equipment loan, hire purchase, a finance lease or an operating lease — and the tool ranks them on what they really cost, not on the headline rate or the size of the monthly payment.

It is deliberately opinion-free about rates. Every rate, fee, term and balloon comes from the lender's own paperwork. Nothing about any country's tax treatment, subsidy scheme or disclosure rule is built in. What the tool guarantees is that the arithmetic on your figures is right and reconciles to the cent: the amortisation schedule for the cheapest offer closes exactly on zero, or exactly on the balloon.

Optionally, enter your monthly operating profit in Settings and every payment is tested against a comfort ceiling you set yourself. Add a regular overpayment or lump sums to an offer and the tool reports the interest and payments you would save.

How loan interest actually works

An instalment loan is an annuity. The lender advances a sum today; you promise a series of equal payments, set so that their present value at the periodic interest rate equals the amount advanced. Write P for the amount financed, i for the periodic rate, n for the number of payments and B for any balloon:

Setting the discounted payments plus the discounted balloon equal to the advance and solving for the payment gives:

Paying at the start of each period means every payment sits with the lender one period longer, so the payment falls. Equipment leases are usually written in advance for exactly this reason — the monthly figure looks better without the lessor giving anything away.

The schedule then runs period by period, rounded to the cent. In arrears, interest is the opening balance times i and the rest of the payment reduces the balance. In advance, the payment comes off first and interest accrues on what is left. The last payment is adjusted by a few cents so the schedule closes exactly, which is standard lender practice.

Nominal, effective and APR — the three numbers people confuse

A nominal annual rate is a quoting convention. "7.2 % per annum, monthly rests" means the lender charges 0.6 % each month; because those charges compound, it says nothing directly about what a year costs. The effective annual rate is the measurement:

Never compare a monthly-rest quote with a quarterly-rest quote on the nominal number alone.

APR is a regulated disclosure that folds fees into the rate, and the conventions differ by jurisdiction. In the United States, Regulation Z computes it by the actuarial method and discloses it as a nominal annualisation — the periodic rate times the number of periods. In the European Union, the annual percentage rate of charge sets the present value of all drawdowns equal to the present value of all repayments and charges, and expresses it as an effective annual rate. This tool reports both, from the internal rate of return of the real cash flows:

The fees are taken off the money you actually receive however they are dressed up — a fee added to the loan is cash you never see, and a fee paid up front is cash you hand back on day one.

Why fees usually matter more than the headline rate

An arrangement, documentation or option-to-purchase fee is interest wearing a different hat. Added to the loan, you also pay interest on it for the whole term; paid up front, you receive less cash than the agreement says you borrowed. Either way the true rate rises, and it rises hardest on short terms and small amounts.

Take 30,000 over 36 monthly payments at 6.0 % nominal: the payment is 912.66. Add a 900 fee to the loan and the payment rises only to 940.04 — but the effective rate including the fee climbs to 8.30 %, against 6.17 % on the rate alone. A lender offering 6.0 % with a 900 fee is dearer than one offering 7.5 % with none (7.76 % effective, and 246 less in total). That is why the offers are ranked on total cost of ownership, the one ranking that cannot be gamed by moving cost between the rate, the fee and the term. Keep the asset price and deposit the same across offers so the ranking stays like for like, and remember that a longer term always accrues more interest — ask for quotes at equal terms where you can.

Balloon and residual payments — and the risk at the end

A balloon (a residual on a lease) is a lump sum left outstanding at the end of the term. Because that slice of principal is never amortised, the regular payment drops — a real advantage for an asset that earns steadily and holds its value. But you pay interest on the balloon for the entire term, and at the end you owe it in one go. There are three ways out: pay cash, refinance at whatever rate exists then, or sell the asset and hope it fetches at least the balloon. Treat any balloon above a third of the advance as a decision that needs its own written plan before you sign; the summary flags those offers.

Finance lease, operating lease, hire purchase or loan?

• Structure — Who owns it — End of term
• Loan — You, from day one — The debt is simply repaid
• Hire purchase — The lender, until the final payment — Title transfers, often with a small option fee
• Finance lease — The lessor — Secondary rental, sale or return — you rarely take title
• Operating lease — The lessor — The asset goes back; the lessor carries the residual risk

Under IFRS 16 a lessee recognises a right-of-use asset and a lease liability for almost all leases over twelve months, so the lessee-side accounting distinction has largely gone — but who carries residual value risk and what happens at the end remain what you are negotiating. The arithmetic here applies to all four: a lease is an annuity due with a residual, hire purchase is usually an annuity in arrears with an option fee. For an operating lease you intend to hand back, the residual is entered as if paid; deduct it mentally, and remember you no longer own the machine. The accounting and tax consequences are a conversation with your accountant.

Overpaying strategically

Every extra payment goes straight to principal and stops accruing interest for the rest of the term, so overpayments are powerful early and weak late. Two levers are modelled per offer: a regular overpayment added to every instalment, and lump sums written as amount@payment number (for example 5000@12, 2500@24).

Check the agreement for early repayment charges, which can wipe out the saving, and confirm overpayments reduce the balance immediately rather than sitting as a credit.

Questions to ask a lender

• What is the total amount payable, in cash, from today until the end — including every fee?
• Is the quoted rate nominal or effective, how often is interest applied, and is it fixed for the whole term?
• What is the disclosed APR or APRC, and does it include the arrangement, documentation and option fees?
• Are payments in advance or in arrears, and does the first payment fall on drawdown?
• What is the balloon or residual, how was it set, and what happens if the asset is worth less?
• What is the early settlement figure part-way through, and are overpayments allowed without charge?
• What security or personal guarantee is required, and what are the insurance and maintenance obligations?

Put the answers into this tool and check the effective rate against what you were told. Where it does not match, the gap is usually a fee somebody forgot to mention.

References

1. European Union (2008). Directive 2008/48/EC on credit agreements for consumers — Article 3, Article 19 and Annex I (the annual percentage rate of charge equation).
2. Consumer Financial Protection Bureau, United States. Regulation Z, 12 CFR §1026.22 — Accuracy of the annual percentage rate, and Appendix J (the actuarial method).
3. IFRS Foundation / International Accounting Standards Board (2016, effective 1 January 2019). IFRS 16 Leases.
4. Sekhon, R. & Bloom, R. Applied Finite Mathematics, §6.4 "Present Value of an Annuity and Installment Payment".
5. Olivier, J. Business Mathematics, §12.4 "Leases" — leases as annuities due and the role of the residual value.