Repair vs Replace Calculator

Deciding whether to repair a broken appliance, device, car, or piece of equipment is a common financial decision that benefits from a structured comparison. The right answer depends not just on the repair bill versus the purchase price of a new unit, but also on how many more years the repaired item is likely to last, its ongoing running costs, and how much more efficient a new replacement would be. This repair vs replace calculator compares the total cost of repairing (repair cost plus remaining years of running costs) against the total cost of replacing (purchase price plus years of new running costs) and shows you the break-even year.

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Repair vs replace formula

Repair Total = Repair Cost + (Annual Running Cost x Repair Life)
Replace Total = Replace Cost + (New Annual Running Cost x Replace Life)
Repair Cost % = Repair Cost / Replace Cost x 100
Recommend Repair if: Repair Total / Repair Life < Replace Total / Replace Life (lower annual cost)

Frequently asked questions

How do you decide whether to repair or replace an appliance?

A widely used rule of thumb is the 50% rule: if the repair cost exceeds 50% of the cost of a new equivalent appliance, replacement is often the better choice. Another framework is to multiply the repair cost by the appliance's age in years - if the result exceeds the cost of a new unit, replace it. But these are heuristics; a full cost comparison accounting for remaining useful life and running costs gives a more accurate answer.

When should I repair vs replace a car?

The repair-or-replace decision for a car depends on the repair cost relative to the car's current market value. A repair exceeding 50-80% of the car's current private-sale value is a common threshold for replacement. However, a paid-off older car is almost always cheaper to maintain than adding a new car payment. Consider total cost of ownership: if an older car's annual repairs plus insurance plus fuel costs are less than a new car payment alone, keeping it may be rational.

What is the break-even point for repair vs replace?

The break-even point is the number of years over which the repair option becomes more expensive than replacement. If repairing now costs less than buying new but the repaired item has higher annual running costs (electricity, fuel, maintenance), there is a year at which cumulative costs flip. This calculator estimates that crossover point.

Does repairing instead of replacing help the environment?

Generally yes. Manufacturing new appliances, electronics, and vehicles requires significant energy and raw materials. Repairing extends the useful life of existing items and delays the need for new production. The EU's Right to Repair directive (effective 2024-2026) and similar US state initiatives aim to make products easier to repair. Repair cafes and community repair events have emerged in many cities to support this movement.

Are appliance repair costs tax deductible?

For personal home appliances (refrigerators, washing machines), repair costs are generally not tax deductible for individuals. However, if the appliance is used in a home business or rental property, the repair cost may be deductible as a business or rental expense. Capital improvements (not repairs) to a rental property may be depreciated over time. Consult a tax advisor for your specific situation.

Sources

Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology.