DIY Project CostDIY planning tools

The cost beyond materials

Should you rent or buy a tool for your DIY projects?

A material takeoff can miss the cost of the equipment needed to install it. Compare a local rental quote with a purchase price across the projects you actually expect to finish. The result also shows when repeated rentals catch up with buying.

Enter your own quotes

The prefilled figures are hypothetical examples in US dollars. Enter tax-inclusive prices and fees from your local store or rental provider. Keep the same tool class and capability on both sides.

Compare the cash cost

The cheapest entered total is only one factor. Compare availability, tool condition, storage, safety and your ability to finish within the rental window.

Worked example: two projects versus three

Suppose a tool rents for $45 a day and each project needs two rental days plus a $15 fee. Rental cost is $105 per project. Buying a comparable tool costs $280 plus $20 in accessories, and the owner expects $5 in maintenance or storage per project. For two projects, renting totals $210 while buying totals $310. For three, both cost $315. This equality is the break-even point under these particular assumptions. A longer rental, a late return or a fourth project would change the result.

Check the agreement before choosing a price

  1. Ask whether your local rental quote is for four hours, a day, a week or another period. Multiply only the days or periods you expect to need, and ask what happens if the project slips.
  2. Check prepayment, deposits, cleaning or refueling rules, damage responsibility, transport and any delivery cost. A refundable deposit affects cash available at pickup but is not a cost if returned in full.
  3. For a purchase, check whether batteries, blades, bits, safety equipment or maintenance are included. The model excludes resale value because it is uncertain and may require selling fees.
  4. Compare the actual work you will do. A rented specialist tool and an inexpensive consumer tool may not be equivalent even if both have the same name.

Lowe's rental guidance describes multiple rental periods, variable prepayment and return conditions. Those are examples of terms to verify with your provider, not prices used by this calculator. Enter the winning option in the whole-project budget, and compare material quotes separately in the supplier quote tool.

Formula and limits

Rental cost per project = rental days × daily rate + other rental fees. Buying cost = purchase price + one-time accessories + number of projects × ownership cost per project. The break-even project count is the upfront buying cost divided by the per-project difference between renting and owning, rounded up. If renting is never more expensive per project, buying has no finite break-even point in this model. The tool omits financing, tax differences, resale, consumables used equally by both options, future price changes and the value of your time. Last reviewed 25 September 2026.