The calculator computes a machine loan payment, total interest and total repaid; it does not compute depreciation. Straight-line and per-hour depreciation are worked by hand with invented figures.
Machine Depreciation Calculator: Reading the Result Before a Second Lathe
The calculator asks for three numbers and returns three. It does not compute depreciation; it computes the loan side, which is the number a shop pays each month for a second lathe. Change the term and run it again to see the trade: a longer term lowers the monthly payment and raises the total interest, and a shorter one does the reverse. Once the payment looks workable, a call or the request form starts a request, and the machine quote comes up on that call.
| Input | Example |
|---|---|
| Amount ($) | $86,000 |
| Rate (annual %) | 9.5% |
| Term (months) | 60 |
| Output | Result |
|---|---|
| Estimated monthly payment | $1,806.16 |
| Total interest | $22,369.60 |
| Total repaid | $108,369.60 |
Straight-line depreciation shows the other side in one line of arithmetic: cost minus estimated salvage value, divided by the years of useful life. With the invented figures below, the lathe loses $8,000 of book value a year. After 24 payments on the loan above, the balance still owed is $56,384.44, below the $70,000 book value at that point.
| Item | Figure |
|---|---|
| Machine cost | $86,000 |
| Estimated salvage value | $6,000 |
| Useful life | 10 years |
| Depreciation per year | $8,000 |
| Book value after two years | $70,000 |
How depreciation is treated on a tax return is a question for the shop's tax preparer; this page makes no tax claim.
Reading the Machinery Depreciation Calculator Result Before Material Runs
Machine shops sit inside fabricated metal product manufacturing (NAICS 332), a group with 6 employer establishments in Sweetwater County, WY in 2023, and 4 of them had fewer than five employees.
Bar stock, plate and tooling inserts for a material run are used up on the job, so they are not machinery and do not depreciate like a lathe. Putting them on the same multi-year schedule as the machine would leave the shop paying for steel long after the parts ship. A material run fits inventory financing or a line of credit; the calculator result is still useful as the fixed monthly cost the run has to carry.
Reading the Machinery Depreciation Calculator Result Before Long Receivables
A shop that invoices on 60-day terms pays the machine installment while it waits. Illustration only, invented figures: with the $1,806.16 installment from the calculator example, a 60-day invoice of $18,500 spans roughly two monthly due dates, so the shop needs cash on hand for those installments before the customer pays.
That gap is a working capital question, not a depreciation one. Depreciation is a bookkeeping figure; the installment is cash leaving the account on a set date. If a customer pays late, each extra month past the due date means one more installment to cover from the shop's own cash while the invoice stays open.
Reading the Machinery Depreciation Calculator Result Before a Second Shift
Straight-line depreciation ignores how hard a machine works. A units-of-production method spreads the same cost over the hours a machine is expected to run instead of over years.
Illustration only, invented figures: the same lathe, $86,000 cost and $6,000 salvage, rated for 32,000 hours, loses $2.50 of book value per hour. On one shift of 2,000 hours a year, that is $5,000 a year; adding a second shift that brings it to 3,800 hours makes it $9,500. The loan payment stays the same either way, but the machine wears out sooner, and the payroll for the second crew goes out every two weeks before the extra parts are invoiced.
Commercial and industrial machinery repair shops (NAICS 811310) counted 18 employer establishments in Sweetwater County, WY in 2023. Separately, ZIP 82935 held 8 establishments in that code (ZBP 2023). A second shift brings maintenance forward too, and a repair bill belongs on a line of credit rather than a machine schedule.
By Ridgehollow Finance · Updated