Can I Afford It Calculator

You can generally afford a purchase when you can pay for it without leaving yourself unable to cover essential expenses, debt payments and a reasonable emergency buffer. Having enough cash today only answers part of the question — what matters is your position in the months that follow.

This calculator compares five figures: monthly net income, essential expenses, debt payments, current savings and the purchase price. From those it works out your disposable income, a suggested maximum purchase price, and how many months of essential spending your savings would still cover after buying. The result is educational — a guideline for your own decision, not personalised financial advice or a recommendation to buy.

The tool runs a handful of short calculations from your five inputs and then combines them into a single verdict.

• Disposable monthly income = income − essential expenses − debt payments. This is the money genuinely free each month.
• Purchase-to-income ratio = purchase price ÷ monthly income × 100. A ratio above 100% means the purchase costs more than a full month of earnings.
• Purchase-to-savings ratio = purchase price ÷ current savings × 100. Above 50% means you are spending more than half of your cash cushion in one go.
• Three-month emergency buffer = (essential expenses + debt payments) × 3. Three months is a widely used rule of thumb, not a regulated requirement. If you want to size that reserve deliberately rather than accept three months, the emergency fund calculator compares 3, 6, 9 and 12 months of cover — many people prefer to protect that reserve before committing to a large discretionary purchase.
• Suggested maximum purchase = the lower of (a) 50% of current savings and (b) current savings − the three-month buffer, never below zero.
• Savings after buying = savings − price, and emergency buffer left = savings after buying ÷ (essential expenses + debt payments), shown in months.
• Time to save the gap = (purchase price − current savings) ÷ disposable monthly income, used when the price is above your savings. This figure assumes you set aside all of your disposable income; the next-step suggestions state clearly when they assume only half of it instead.

How the verdict is decided

• Not affordable right now — the price is above your savings, or your disposable income is zero or negative.
• Looks affordable — the price is at or below the suggested maximum.
• Affordable, but tight — above the suggested maximum, but at least 1.5 months of essential spending would remain.
• Risky for your budget — less than about six weeks of essential spending would remain.

Assumptions and limitations: the three-month buffer and the half-of-savings ceiling are commonly used guidelines, not mathematical facts or regulated standards. All figures are monthly amounts in a single currency, income is after tax, and the calculator applies no interest, inflation, investment growth or credit terms. It does not know about upcoming income changes, dependants, insurance cover or any recurring cost the purchase itself creates, so treat the verdict as one input into your decision.

• Disposable monthly income — what is left each month after essentials and debt. It is the speed at which you can rebuild savings after a purchase.
• Suggested maximum purchase — the largest price that stays inside both guidelines: no more than half your savings, and never dipping into three months of essential spending.
• Purchase-to-income ratio — the price expressed as a share of one month of income. Useful for sensing scale rather than passing a test.
• Purchase-to-savings ratio — how much of your cushion this one decision uses.
• Savings left after buying — your cash position the day after the purchase.
• Emergency buffer left — those remaining savings expressed in months of essential spending, so a figure of 2.5 means two and a half months of essentials covered.
• Time to save the gap — shown instead of the buffer when the price exceeds your savings: how long your disposable income would take to cover the shortfall.

Maya takes home 4.200,00 € a month. Her essentials come to 2.100,00 € and she pays 450,00 € towards a student loan and a credit card, leaving 1.650,00 € of disposable income. She has 9.000,00 € saved and wants a 2.500,00 € laptop.

• Three months of essentials and debt = 7.650,00 €.
• Savings minus that buffer = 1.350,00 €; half her savings = 4.500,00 €.
• The lower figure, 1.350,00 €, becomes her suggested maximum purchase.
• Savings after buying = 9.000,00 € − 2.500,00 € = 6.500,00 €, which is 6,500 ÷ 2,550 ≈ 2.5 months of essential spending.

The 2.500,00 € laptop is above that ceiling but still leaves about two and a half months of essentials, so the result comes back as "affordable, but tight". Under these assumptions the purchase falls within the calculator's affordable range, though waiting and adding part of her 1.650,00 € monthly disposable income would move her back inside the suggested maximum.

Amounts follow the currency selected in the calculator above. AffordPilot never converts between currencies — the figures are the same either way.

The calculator covers price, savings and monthly cash flow. These factors sit outside the maths and are worth thinking through before you decide:

• Emergency savings — what would be left if a boiler, a car repair or a medical bill arrived the week after the purchase.
• Existing monthly commitments — subscriptions, instalment plans and buy-now-pay-later balances that already claim part of your income. A monthly budget calculator is the quickest way to see the full picture.
• Recurring costs the purchase creates — insurance, servicing, consumables, storage or a subscription the product depends on. The sticker price is often the smallest part of the total.
• Debt — whether paying down a high-interest balance would do more for you than the purchase itself.
• Income stability — how confident you are in the next six months of earnings, especially with variable or freelance income.
• Whether it can be delayed — a purchase that can wait a month or two is often affordable later without any cushion being touched.
• Opportunity cost — what else the same money would have done, from an emergency fund top-up to a planned trip.

These are general considerations rather than individualised advice; your own circumstances may point in a different direction.

Being able to pay is a question about a single moment: the money is there and the transaction goes through. Affording something is a question about the months that follow.

Three ways a payable purchase becomes unaffordable

• It consumes the buffer. Paying in full can leave savings so thin that the next unexpected bill goes on a credit card — turning a cash purchase into an interest-bearing one after the fact.
• It creates new monthly costs. Insurance, maintenance, subscriptions and running costs claim disposable income every month, long after the one-off price is forgotten.
• Financing hides the size. Splitting a price into instalments makes it feel smaller while committing part of your future income. That is why the calculator asks for existing debt payments: each new commitment reduces the flexibility you have left.

A practical test: after this purchase, could you handle a surprise cost equal to one month of essential spending without borrowing? If the answer is no, the purchase is payable but not comfortably affordable. If a car is what you are weighing up, the car affordability calculator makes the same point with running costs included.

• Not sure where your money goes each month? Start with the monthly budget calculator to work out your real essentials and disposable income.
• Weighing up a vehicle? The car affordability calculator includes insurance, fuel and maintenance in the verdict.
• Or browse all AffordPilot calculators, including the money calculators category.