Per-Mile Maintenance Reserve Calculator

About this calculator

A per-mile maintenance reserve spreads a vehicle’s expected annual maintenance cost evenly across the miles it actually drives, giving a per-mile dollar figure you should set aside for every mile on the odometer so repairs never come as a budget surprise. The calculation is simply annual maintenance cost ÷ annual miles driven, which the calculator also converts into a monthly reserve amount.

Fleet managers and trucking companies use this figure to build maintenance reserve accounts, set per-mile lease or rental rates that actually cover upkeep, and benchmark one vehicle or route against another regardless of how many miles each racks up. Owner-operators use the same math for personal budgeting — knowing the true per-mile cost of ownership (beyond fuel) is what separates an accurate cost-per-mile estimate from one that ignores maintenance until a major repair bill hits.