Why MACRS Always Assumes Zero Salvage Value

Under the Modified Accelerated Cost Recovery System, the IRS mandates zero salvage value for all depreciable assets—regardless of what the asset might actually sell for at the end of its recovery period. This is a deliberate policy choice encoded in IRC §168(b)(4). Before ACRS (the predecessor to MACRS) was enacted in 1981, taxpayers were required to estimate and deduct salvage value from the depreciable base, which created disputes, inconsistency, and administrative burden. Congress eliminated the requirement to simplify compliance and provide a consistent incentive for capital investment.

The practical result: a $30,000 delivery vehicle that will realistically sell for $8,000 after 5 years still generates MACRS depreciation based on the full $30,000 cost. When the vehicle is sold for $8,000—which exceeds its $0 adjusted MACRS basis—the entire $8,000 is Section 1245 recapture income taxed as ordinary income. The zero salvage assumption does not eliminate the eventual tax; it merely defers and recharacterizes it.

Book vs. Tax: When Salvage Value Still Matters

For GAAP financial statements, ASC 360 requires that residual value (salvage value) be estimated and subtracted from cost before computing depreciation. This means a business will maintain two separate depreciation schedules for many assets: a MACRS schedule for the IRS (zero salvage, higher annual deductions) and a GAAP schedule (positive salvage value, lower annual book depreciation). The difference creates a temporary timing difference recorded as a deferred tax liability on the balance sheet.

For IFRS reporters (IAS 16), residual value must reflect the estimated amount the entity would currently receive if the asset were already at the end of its useful life and in the condition expected at that time. IFRS even requires annual reviews of the residual value estimate. A manufacturer using IFRS might assign a 10% residual value to production equipment based on observable scrap prices, depreciating only 90% of cost—quite different from zero-salvage MACRS.

Asset Classes Where Zero Salvage Value Is Economically Accurate

While MACRS imposes zero salvage by rule, many asset categories genuinely have no terminal value in practice:

• Leasehold improvements: walls, flooring, and built-in fixtures installed in rented space revert to the landlord and cannot be removed without destruction. Their economic salvage value is truly zero.
• Capitalized software developed for internal use (ASC 350-40): custom ERP implementations have no third-party market and are written down to zero over 3–5 years.
• Highly specialized equipment with no secondary market—custom tooling, molds, and dies built for a specific product—will be scrapped when the product line ends.

For these asset types, zero-salvage depreciation is not just a tax simplification; it accurately represents economic reality and produces GAAP book values that align with fair value.