Equipment Rate Calc

Attachment Profit Calculator

Estimate whether an attachment pays for itself through added hourly rate, utilization, maintenance cost, wear, and resale value. Results update automatically as inputs change.

Inputs

Job assumptions

Enter the amount paid to acquire and ready the attachment for work, excluding financing interest counted elsewhere.

Enter only the hourly amount charged above the base machine rate when this attachment is working.

Use attachment-specific billable hours from recent jobs or a conservative monthly forecast.

Operating cost

Include teeth, hoses, cutting edges, service, and expected repairs attributable to each attachment hour.

Ownership

Use a conservative net sale or trade-in estimate after selling costs at the planned exit date.

Calculations stay in this browser unless you explicitly save or share.

Net Cost After Resale0

How this calculator works

Payback hours = net attachment cost / added profit per hour. Payback months = net attachment cost / monthly added profit. Monthly added profit = (added billing rate - hourly wear and maintenance) × billable attachment hours.

Payback months is calculated only when billable attachment hours and added profit per hour are both positive. Zero planned use means there is no modeled monthly payback; it does not mean instant recovery.

Read the methodology and editorial policy

Use the result as a cost checkpoint

Use this calculator before buying or repricing attachments such as augers, grapples, breakers, trenchers, brush cutters, power rakes, and specialty buckets.

This tool is best for pricing buckets, augers, grapples, breakers, trenchers, brush cutters, and power rakes. Use the result to decide whether an attachment creates enough added hourly profit to justify its cost and wear. Review low utilization, underestimated wear, overestimated resale value, and customers who expect specialty attachments at base machine rates before relying on the result.

Worked example

A $4,500 attachment with $1,500 resale value that adds $37/hour profit pays back in about 81 billable hours.

Only count realistic billable attachment hours, not every machine hour. If planned attachment use is zero, treat payback as unavailable rather than reading a zero result as immediate recovery. For high-wear skid steer work, carry the documented attachment allowance into the skid steer cost-per-hour guide.

Input and quote review

  • Charge specialty attachments separately when they create value or wear.
  • Track billable attachment hours after purchase.
  • Do not use resale value unless you would actually sell the attachment.
  • Raise wear cost for abrasive, demolition, or brush work.

Keep the final scope, assumptions, exclusions, allowances, change triggers, and post-job results with the estimate so future defaults are supported by evidence.

Common questions

Does a short payback mean I should buy the attachment?

Not by itself. Confirm recurring billable demand, machine compatibility, operator capability, downtime, wear, storage, and a realistic resale value before purchasing.

Where are saved inputs stored?

Only an explicit Save stores inputs in this browser's localStorage. Share places inputs in the URL hash. The calculator does not send them to Equipment Rate Calc.

Should added billing rate equal the attachment's full customer charge?

Enter only the amount charged above the base machine rate. If the attachment is bundled, estimate its incremental value consistently and avoid counting base-machine revenue twice.

Important disclaimerPlanning estimate only. Verify current costs, measurements, production, scope, access, customer requirements, contracts, permits, insurance, taxes, and local rules before quoting or committing money.