Equipment Lease vs Buy Calculator
Compare the net present cost of leasing equipment against purchasing it, accounting for depreciation tax relief, residual value, and the cost of capital.
Formula & Reference
| Variable | Symbol | Formula | Units |
|---|---|---|---|
| Equipment Lease vs Buy Calculator | — | Compare NPV of lease payments against NPV of purchase net of tax relief and residual | currency |
Step-by-Step Examples
Purchase 85,000, 5 year life, 15,000 residual, lease 19,500/year for 5 years, 8% discount, 21% tax, 2,200 maintenance.
- Annual depreciation = (85,000 − 15,000) / 5 = 14,000
- Annual tax shield = 14,000 × 21% = 2,940
- Net maintenance after tax = 2,200 × 0.79 = 1,738
- Lease PV = 5 payments of 15,405 after tax, discounted ≈ 61,510
- Purchase PV ≈ 76,570 including residual credit
Same equipment but lease at 14,000/year and no residual value on purchase.
- Without residual, the full 85,000 is sunk
- Lease payments after tax are considerably lower
- Leasing wins on present value
Purchase 85,000 over 5 years versus a 3 year lease.
- A shorter lease covers fewer years of use
- The comparison is not like for like unless the term matches the useful life
- Extend the term or account for the replacement cost after year 3
Real-World Applications
Common Mistakes to Avoid
The comparison must be on present value, accounting for the time value of money, tax relief, and residual value — not raw totals.
Owned equipment retains value at the end of the term. Omitting the residual systematically makes purchasing look worse than it is.
A three-year lease against five years of ownership is not a fair comparison unless the replacement cost after year three is included.