About

Appliances lose value the moment they leave the store. A $2,000 refrigerator worth $400 after 10 years is not a guess. It follows a depreciation curve governed by the asset's useful life n, its salvage value S, and the method applied. Misjudging this leads to inflated insurance claims, incorrect tax deductions for home-office equipment, or overpaying for used goods. This calculator implements four standard depreciation methods - Straight-Line, Declining Balance, Sum-of-Years' Digits, and Units of Production - using useful life estimates aligned with IRS Publication 946 and appliance industry data.

Results include a full year-by-year schedule showing annual depreciation expense, accumulated depreciation, and remaining book value. The tool also estimates current fair market value based on elapsed ownership time. Note: actual market value depends on brand, condition, local demand, and maintenance history. This tool approximates value assuming normal residential use and average condition degradation.

Formulas

The Straight-Line method distributes cost evenly across the useful life:

D = C − Sn

The Declining Balance method applies a fixed rate to the remaining book value each period:

D_t = BV_t−1 × kn

where k = 2.0 for double-declining or 1.5 for 150% declining balance. Book value BV never drops below salvage S.

Sum-of-Years' Digits weights depreciation toward earlier years:

D_t = (C − S) × n − t + 1SYD

where SYD = n × (n + 1)2

Units of Production ties depreciation to actual usage:

D_t = (C − S) × U_tU_total

where C = original cost, S = salvage value, n = useful life in years, t = current year, BV = book value at start of period, U_t = units produced (or hours used) in period t, U_total = total estimated lifetime units.

Reference Data

Appliance Category	Typical Useful Life (years)	Salvage Value (%)	IRS MACRS Class	Avg. Replacement Cost $
Refrigerator	13	10	7-year	1,500
Washing Machine	10	8	7-year	800
Dryer	13	8	7-year	700
Dishwasher	9	5	7-year	650
Oven / Range	15	10	7-year	1,200
Microwave	9	3	5-year	250
HVAC System	15	10	7-year	5,000
Water Heater	12	5	7-year	1,200
Garbage Disposal	12	0	5-year	350
Freezer (Standalone)	11	8	7-year	600
Air Conditioner (Window)	10	5	5-year	400
Dehumidifier	8	3	5-year	250
Vacuum Cleaner	6	0	5-year	300
Television	7	5	5-year	800
Home Theater / Sound System	8	5	5-year	500
Coffee Machine (Espresso)	6	5	5-year	400
Washer-Dryer Combo	10	7	7-year	1,100
Ceiling Fan	10	0	5-year	200
Electric Fireplace	10	5	7-year	500
Robot Vacuum	5	3	5-year	450

Frequently Asked Questions

Declining Balance (200%) front-loads depreciation and mirrors how most appliances lose value rapidly in the first 2-3 years, then plateau. Straight-Line is simpler but underestimates early-year loss. For insurance claims, adjusters typically use a Straight-Line approach with condition modifiers. For tax purposes on home-office equipment, IRS MACRS (a modified declining balance) is standard.

Salvage value sets the floor. The depreciable base is always Cost minus Salvage. A refrigerator costing $2,000 with 10% salvage ($200) only depreciates $1,800 total. Setting salvage too high understates annual expense; setting it to zero overstates loss. Industry data suggests most major appliances retain 5-10% of original cost as scrap/parts value at end of life.

This tool provides general depreciation schedules. IRS tax depreciation uses MACRS (Modified Accelerated Cost Recovery System) with specific recovery periods (5-year or 7-year property classes for appliances). The Declining Balance 200% method here approximates MACRS behavior. For actual tax filings, consult IRS Publication 946 and a tax professional, as partial-year conventions (half-year, mid-quarter) apply.

Once the book value reaches salvage value, no further depreciation is recorded. The appliance is considered fully depreciated. Its actual market value may differ - a well-maintained HVAC system at 16 years may still sell above its salvage estimate. The schedule stops at year n regardless of real-world condition.

The calculator applies a condition multiplier to the book value at the current elapsed time. Excellent condition uses a 1.15× factor, Good uses 1.0×, Fair uses 0.85×, and Poor uses 0.65×. This accounts for maintenance quality. A poorly maintained washer at 5 years is worth less than its theoretical book value suggests.

In standard MACRS practice, the method switches from declining balance to straight-line when straight-line yields a larger deduction for the remaining life. This calculator implements this crossover: once the declining balance annual amount falls below (Remaining Book Value − Salvage) ÷ Remaining Years, it switches to straight-line for the remaining periods to ensure full depreciation.

It is the most accurate if you track actual usage hours. A washing machine rated for 30,000 cycles running 5 loads/week depreciates differently from one running 15 loads/week. The challenge is tracking. If you lack usage data, time-based methods (Straight-Line or Declining Balance) are more practical for residential appliances.