How to Use Our Loan vs Lease Calculator for Vehicle Decisions

Deciding whether to buy a car with a loan or lease it is one of the biggest financial choices UK drivers face — yet many people make it without properly comparing the total cost. Our loan vs lease calculator vehicle option lets you model both scenarios side-by-side, showing you the complete picture: the monthly payment, interest paid, maintenance costs, and what it all adds up to over 3, 5, or 7 years. This guide walks you through exactly how to use the loan vs lease calculator to get a clear answer.

What You Need to Gather First

Before you open the calculator, jot down a few pieces of information. Having these ready means you'll get results in under two minutes, and the numbers will be realistic.

For the loan option:

The vehicle's purchase price (the actual list price, or what you'd realistically pay)
Your deposit or upfront cash amount (what you're putting down)
The loan term you're considering (36, 60, or 72 months are common; we let you set any)
Your likely interest rate (check what your bank or a specialist car finance provider quotes for your credit score and deposit)
Estimated annual maintenance and repair costs (new cars often have low first-year costs; older models higher)

For the lease option:

The monthly lease payment you've been quoted
The lease term (24, 36, or 48 months are standard)
Any upfront fees or required down payment
Annual mileage limit and the cost-per-mile if you exceed it
Whether maintenance is included (most leases cover it; some don't)

Context that helps but isn't required:

Your annual vehicle tax (VED) band — check gov.uk vehicle tax rate tables if you don't know
Insurance group and your likely annual premium (loan cars are often insurable at similar rates to leased cars, but the loan owner bears the full cost)
Fuel efficiency and your estimate of annual driving costs

If you don't have exact figures, rough estimates are fine — the calculator is for comparison, not replacing a spreadsheet with a finance broker. You're trying to see which option looks better, not get the precise number to the penny.

How to Use the Calculator: Step by Step

Step 1: Enter the purchase price and your deposit

Start with the loan side. Enter the vehicle price you're targeting. If you're thinking of buying a 5-year-old VW Golf, the current market price might be £12,000; if it's a new one, £26,000. Be realistic — your calculator is only as useful as the number you put in.

Then enter your deposit. If you've saved £3,000 and the car is £15,000, you're financing £12,000. The calculator will show you the loan amount (sometimes called the principal).

Step 2: Set the loan term and interest rate

How many months do you want to spread the repayment over? A 5-year (60-month) loan is standard for used cars; 3 years (36 months) for shorter ownership; 7 years (84 months) if you want the lowest monthly payment but will pay more interest overall.

Next, the interest rate. This is where checking with your lender matters — rates for car finance vary by credit score, deposit size, and vehicle type. In early 2026, typical rates range from 3.5% to 7.5% depending on those factors. If you're not sure, use 5.5% as a middle estimate, then re-run with the actual quote once you have it.

The calculator will instantly show you the monthly payment and the total interest you'll pay. On a £12,000 loan at 5.5% over 60 months, you're looking at roughly £228/month and £1,680 in total interest. That's useful context.

Step 3: Estimate your annual running costs

This is where loan and lease diverge. If you own the car (financing it with a loan), you pay for:

Maintenance and repairs (varies hugely; new cars might be £300/year, 7-year-old ones £800+)
MOT and servicing (included in some warranty packages; otherwise £150–400/year)
VED/vehicle tax (ranges from £0 for zero-emission cars to £355+; check the gov.uk table for your car's band)
Insurance (let's say £400–800/year depending on age, engine size, where you park it)

A rough total for a modest car: £1,200–1,500/year in the first few years.

If you're leasing, most of these are bundled in — the lease payment typically includes maintenance, roadside assistance, and often insurance. You just pay fuel and excess mileage charges. That simplicity is worth something.

Step 4: Enter the lease scenario

On the lease side, enter:

The monthly lease payment from your quotation
The lease term (36 months is common)
Any initial payment or deposit required
Your annual mileage, and the excess-mileage rate if applicable (often 10–20 pence per mile over limit)
Whether maintenance is included (tick yes for most new-car leases)

Step 5: Compare the totals

The calculator now shows you the total cost of ownership for each path — the sum of all monthly payments, deposits, tax, maintenance, and any excess charges. One number tells you which option is cheaper.

Example: A £20,000 car financed with a £4,000 deposit, 5.5% over 60 months, £1,200/year running costs = roughly £14,800 total (loan repayments £16,000 + running costs over 5 years minus depreciation credit). A lease of the same car at £280/month for 36 months, maintenance included = £10,080. Over the lease period (3 years), the lease is cheaper. But extend it to 5 years, and you've bought the car outright and can own it depreciation-free for years 4–5.

Understanding Your Results

The calculator gives you three key outputs:

Monthly payment: This is what comes out of your account each month. For budgeting, this is the number you care about most. If the loan payment is £280/month and the lease is £320/month, the lease costs more per month — but that's only part of the story.

Total cost over the period: This is the full picture. It includes interest, tax, maintenance, excess mileage charges, and everything else. This is the number you use to compare lease vs. loan. If loan costs £18,000 and lease costs £12,000 over 3 years, the lease wins (for that timeframe).

Cost per mile: The calculator might also show this. If you're driving 10,000 miles a year for 5 years (50,000 miles), and the total cost is £20,000, that's 40 pence per mile. For a lease with excess mileage, the per-mile cost can shoot up if you drive more than expected.

Pay attention to the assumptions baked in. The calculator assumes:

No breakdown during the loan term (you're still paying for the car if it breaks down badly)
Your interest rate stays fixed (for fixed-rate loans, it does; variable rates might change, though most car loans are fixed)
Maintenance costs are average (your car might be cheaper or pricier)
Fuel costs are stable (they fluctuate, but the difference is usually small vs. the other costs)

Loan vs Lease: Real Scenarios

To make this concrete, here are two scenarios.

Scenario: First-time car buyer, 3-year view

You're 26, earning £28,000/year, and want to buy your first car. You've saved £5,000. You're eyeing a 2-year-old Vauxhall Corsa (£9,500), or leasing a new one.

Loan path: £5,000 deposit, £4,500 loan at 5.8% over 48 months = £107/month + £750/year running costs = £9,107 total + insurance and fuel.

Lease path: New Corsa lease, £165/month, 36 months, 10,000 miles/year included, maintenance included = £5,940 total + insurance and fuel.

The lease is £3,200 cheaper, and you never worry about breakdown risk or depreciation.

Scenario: Longer-term owner, 7-year view

You're 35, earning £45,000, and plan to own a car for at least 7 years. You've saved £8,000 and want a £18,000 estate car.

Loan path: £8,000 deposit, £10,000 loan at 5.2% over 84 months = £131/month. Running costs (7 years) = £10,500. Total: £21,392.

Lease path: You'd need to renew every 3 years, so three consecutive leases at £240/month, 36 months each = £25,920, plus insurance.

The loan is £4,500 cheaper over the full 7 years, and you own the car free and clear afterward.

When to Lease vs. When to Buy

Lease if:

You drive fewer than 10,000 miles a year and want predictable costs
You like driving a new car with the latest tech every 3 years
You don't want to worry about depreciation, maintenance, or resale
Your employer offers lease deals or you're a business user (tax advantages apply)

Buy (with a loan) if:

You'll keep the car 5+ years — ownership economics improve over time
You drive high mileage and don't want to pay excess charges
You want to modify the car or use it how you like
You're handy and can tackle some maintenance yourself
You've modelled the numbers and they favour ownership

Frequently Asked Questions

Q: Is the calculator accurate for my specific situation? A: It uses standard assumptions — current interest rates, average maintenance, typical depreciation. For a ballpark comparison, it's reliable. For an exact quote, collect quotes from your lender and your lease broker and feed those in. One percentage-point change in your interest rate swings the total cost by hundreds of pounds, so getting that right matters.

Q: What if I'm thinking of buying a second-hand car — does that change things? A: Yes. Used cars have higher maintenance costs, variable warranty coverage (maybe none), and less predictable depreciation. The loan path favours used cars less than new, but you're starting from a much lower purchase price, which can tip the balance. Run both scenarios.

Q: How do I know what interest rate to use? A: Contact your bank and a specialist car finance broker (like a comparison site). They'll quote you a rate in 10 minutes based on your credit file. Don't guess. Rates vary from 3% to 8% depending on your credit score, deposit size, and the car age.

Q: What about gap insurance — should I include that in the cost? A: Gap insurance (which covers the gap if you write off a financed car) costs £150–400 depending on the loan size. Most people don't need it — you're insured against the car's value at the time of loss. But if you're financing 90%+ of a new car's value and you're risk-averse, it's a smart add-on.

Q: If I'm leasing, am I stuck with the annual mileage limit? A: Broadly yes. Exceed it, and you pay 10–20 pence per mile — so 5,000 extra miles costs £500–1,000 at settlement. If your driving is unpredictable, factor in a higher limit when you negotiate the lease, or buy instead. Lease companies prefer you pick a realistic mileage at the start.

Q: Can I adjust the calculator for my own circumstances? A: Yes — that's the whole point. Change one variable at a time (e.g., drop the interest rate by 0.5%, or add £50/month in running costs) and watch how it shifts the total. This is how you build intuition for what matters most.

Q: What if my credit score is poor — does that affect the loan rate? A: Significantly. Poor credit (below 620 in the US, or several missed payments in the UK) might see you quoted 8–12%. A used-car loan broker might still approve you, but the cost is higher. You might find a lease easier to qualify for (lease companies assess likelihood of monthly payment, not total creditworthiness).

Q: Should I compare this to the general loan calculator? A: For context, yes. Our loan calculator covers any loan, including car finance. Use it if you want to isolate just the loan math without the lease comparison. The loan vs lease calculator is purpose-built for this decision, so it's the better tool if you're genuinely deciding between the two.

Q: Can I save my calculation so I can revisit it later? A: Create a free SimpleCalc account and your calculations are stored. You can also bookmark the URL (it encodes your inputs), or take a screenshot. Rates and costs change, though, so re-run it quarterly if you're still deciding.

Next Steps

Use the loan vs lease calculator to run three scenarios: optimistic (low interest rate, low mileage), realistic (your actual numbers), and pessimistic (higher rate, higher mileage). If all three favour the same option, you've got your answer. If the results are close, the decision depends on your personal priorities — control, predictability, cost, or peace of mind.

Related reading: understand how loan payments work with our general loan guide, or check how much you can save toward a vehicle deposit.

Get started with the loan vs lease calculator now — it takes under 2 minutes, and the insight is worth it.