How the car affordability calculation works
The calculator first subtracts essential expenses, planned savings and your safety buffer from monthly take-home pay. It then compares that remaining capacity with three simple percentage-based reference points.
The recommended figure is always the lower of the percentage reference and the money genuinely left after your priorities. This prevents a percentage alone from suggesting a budget you cannot actually support.
The complete car budget must remain within this capacity.
| Level | Income reference | How to read it |
|---|---|---|
| Comfortable | Up to 10% | More room for other goals and unexpected costs |
| Balanced | Up to 15% | The main planning reference used by the calculator |
| Upper / tight | Up to 20% | Less flexibility if costs or income change |
Car budget by monthly take-home pay
The table gives fast all-in reference points before expenses are considered. Your usable result can be lower when rent, debt, childcare, savings or a safety buffer take priority.
| Monthly take-home pay | Comfortable · 10% | Balanced · 15% | Upper / tight · 20% |
|---|---|---|---|
| 2,000 | 200 | 300 | 400 |
| 3,000 | 300 | 450 | 600 |
| 4,000 | 400 | 600 | 800 |
| 5,000 | 500 | 750 | 1,000 |
| 6,000 | 600 | 900 | 1,200 |
What your monthly car budget must include
A low finance or lease payment does not necessarily mean the car is affordable. Add every recurring or predictable cost so that the result reflects what the vehicle will actually take from your budget.
- Finance payment or lease payment, if applicable.
- Insurance based on a real quote for the exact vehicle.
- Fuel, home charging and paid public charging.
- Servicing, tyres and a monthly repair allowance.
- Parking, road charges, registration and other local costs.
Car affordability calculator for UK salaries
Select GBP, enter your monthly take-home pay and use the same currency for every expense. Include the complete cost of the car: PCP or HP repayment, insurance, fuel or charging, servicing, tyres, repairs, parking and recurring charges.
A finance provider may approve a different amount because its affordability and credit checks are separate. AutoPrisme shows what the vehicle leaves in your household budget; it does not produce a credit decision or an HP or PCP quotation.
Example with 3,000 in monthly take-home pay
With 3,000 of take-home pay, the simple balanced reference is 450 per month. If essential expenses are 1,800, planned savings are 300 and the safety buffer is 200, 700 remains available before the car. The balanced result therefore stays at 450 because it is below the remaining capacity.
That 450 must cover the complete vehicle budget. If finance is already 390, only 60 remains for insurance, energy, maintenance, tyres and repairs, which is unlikely to be realistic for many cars.
Use the car loan payment calculator to test the finance line, then place that payment inside the total car cost calculator with insurance and running costs.
Frequently asked questions
How much of my take-home pay should go towards a car?
AutoPrisme uses 10% as a comfortable reference point, 15% as a balanced reference point and 20% as an upper or tight reference point. These percentages apply to the complete monthly car budget and are capped by the money left after your expenses, savings target and safety buffer.
Should I enter only my finance or lease payment?
No. Enter the complete monthly cost: finance or lease payment, insurance, fuel or charging, maintenance, tyres, repairs and other recurring car expenses.
Does the calculator approve a loan?
No. It provides budgeting reference points only. A lender applies its own affordability, credit and legal checks.
How much car can I afford with 3,000 a month take-home pay?
Using AutoPrisme's reference points, 300 a month is comfortable, 450 is balanced and 600 is an upper or tight all-in car budget. The calculator reduces those figures if essential expenses, savings and a safety buffer leave less money available.
Does a larger down payment make an expensive car affordable?
A larger down payment can reduce the finance payment and total interest, but it does not reduce insurance, fuel, charging, maintenance, tyres or depreciation. Keep an emergency cash buffer and test the complete monthly cost.
Are my figures sent to AutoPrisme?
No account is required. Your latest English calculator inputs are stored locally in your browser and separately from the French calculator.
Can I use this car affordability calculator in the UK?
Yes. Select GBP and enter monthly take-home pay, essential expenses, planned savings and a safety buffer. The method is not a lender approval test and does not include UK-specific credit scoring, so verify any finance quote separately.