How Long to Depreciate Parking Lot Paving: 15 Years or Bonus

Parking lot paving is depreciated over 15 years under standard federal tax rules, but most businesses paving a lot in 2026 can deduct the entire cost in year one through 100% bonus depreciation. The 15-year figure comes from the IRS classifying paving as a land improvement under the Modified Accelerated Cost Recovery System (MACRS).¹ Whether you actually stretch deductions across those 15 years depends on when you contracted the work, whether you elect out of bonus depreciation, and whether some of the spending is really a repair rather than a capital improvement.

Why 15 Years

Land itself is never depreciable. Improvements to it are. The IRS groups parking lot paving with roads, sidewalks, fences, and landscaping as land improvements in MACRS asset class 00.3.¹ Under the General Depreciation System (GDS), which is the default, that class carries a 15-year recovery period. Because of the half-year convention, the cost is actually spread across 16 calendar years, with a half-year of depreciation in year one and another half-year at the end.

A slower schedule exists. The Alternative Depreciation System (ADS) stretches the recovery to 20 years using straight-line depreciation.¹ You would never volunteer for it, but some taxpayers are required. A real property trade or business that elects out of the Section 163(j) business interest limitation must depreciate its property under ADS. That trade, unlimited interest deductions for slower cost recovery, is worth modeling before the election, because your paving becomes a 20-year asset instead of a 15-year one.

Skipping the 15 Years With Bonus Depreciation

For most 2026 paving projects, the 15-year schedule is mostly theoretical. The One, Big, Beautiful Bill Act permanently restored 100% bonus depreciation for qualified property acquired after January 19, 2025.² All 15-year MACRS property is eligible, which includes parking lot paving. There is no dollar cap.

The date that controls eligibility is when a binding written contract was signed, not when the crew finished pouring asphalt. Contract signed after January 19, 2025? You can deduct 100% of the cost in the year the lot is placed in service.²

The trap is a paving contract signed before January 20, 2025, with the lot not placed in service until 2026. That property still lives under the pre-OBBB phase-down, where bonus depreciation drops to 20% for property placed in service in 2026. The remaining 80% goes onto the standard 15-year MACRS schedule. If you locked in a contract in late 2024, you are stuck with the phase-down rate.

You can also elect out of bonus depreciation entirely. Some businesses want the deductions spread across future years to offset expected income at higher rates. The election is made class by class, so opting out for 15-year property does not touch your equipment or other assets.

Section 179 Will Not Help

Section 179 expensing gets mentioned alongside bonus depreciation, but it does not cover parking lots. To qualify, property must generally be Section 1245 property or “qualified real property.”³ Qualified real property is limited to improvements to the interior of a nonresidential building, roofs, HVAC, fire protection, and security systems. Parking lot paving is an exterior land improvement classified as Section 1250 property. It fits neither bucket.

The 2026 Section 179 annual limit is $2,560,000, with phase-out starting at $4,090,000 of qualifying property placed in service. Those numbers matter for other assets in the same tax year, not for the paving.

Running the 15-Year Calculation When Bonus Is Not Taken

When you cannot or choose not to take 100% bonus depreciation, the depreciable basis is recovered over 15 years under GDS using the 150% declining balance method.¹ The method front-loads deductions in the early years, then automatically switches to straight-line in whichever year the straight-line figure would be larger.

The half-year convention sets the timing. It treats the paving as placed in service at the midpoint of the tax year no matter the actual date, giving you half a year of depreciation up front and another half-year at the end.¹ Using the IRS percentage tables in Publication 946, the year-one deduction under 150% declining balance with the half-year convention is 5% of the depreciable basis. It rises in years two and three before tapering.

Watch the fourth quarter. If more than 40% of the total MACRS property you place in service during the year lands in the last three months, the mid-quarter convention applies instead, and the first-year deduction shrinks for fourth-quarter property.¹ Paving late in the year? Check your earlier asset purchases to see whether you stay under the threshold. All of this gets reported on Form 4562.⁴

Some Paving Costs Are Repairs, Not Capital Improvements

Before you set up any 15-year schedule, ask whether the spending has to be capitalized at all. Routine upkeep that keeps the lot functional without making it substantially better is deductible in the year paid. The IRS Tangible Property Regulations use three tests, sometimes called the BAR framework: does the work result in a betterment, an adaptation to a new use, or a restoration?⁵ Yes to any of the three means capitalize. No to all three means deduct now under Section 162.

The unit of property is the paved parking area itself, not the building it serves. You are asking whether the work improved the parking lot, not the property overall. Filling potholes, sealing cracks, and applying a sealcoat over the existing surface are repairs. Full-depth asphalt replacement, milling and resurfacing, and expanding the lot’s footprint are capital improvements. A complete resurface that strips and repaves triggers the restoration prong. Adding square footage is a betterment. Both go on the 15-year schedule (or qualify for bonus depreciation).

Routine Maintenance Safe Harbor

The routine maintenance safe harbor protects recurring paving work from capitalization. If the activity is one you reasonably expect to perform more than once during the property’s class life, and the purpose is to keep the lot in ordinarily efficient operating condition, you can deduct it.⁵ For land improvements the class life is 20 years, so sealcoating every four or five years fits easily.

Safe Harbor for Small Taxpayers

Smaller owners get another option. The safe harbor for small taxpayers lets you deduct the full amount spent on repairs, maintenance, and even improvements to a building if three conditions are met: average annual gross receipts of $10 million or less over the prior three years, an unadjusted basis in the building of $1 million or less, and total annual repair and improvement costs for that building at or below the lesser of $10,000 or 2% of the building’s unadjusted basis.⁵ The election has to be made annually on a timely filed return. For a small retail building with a $400,000 basis, the cap is $8,000. A modest paving patch under that ceiling could be expensed even if the BAR test would otherwise pull it into capitalization.

Claiming the Loss on Old Pavement You Tear Out

If you are repaving over old asphalt that still has undepreciated basis on your books, do not leave that basis stranded. The partial disposition election under Treasury Regulation 1.168(i)-8 lets you recognize a loss for the retired portion of the old surface in the year it is removed.⁶ You determine the adjusted basis of the old pavement at removal, subtract the depreciation already claimed, and deduct the remainder as a loss. No special form. You make the election by reporting the loss on a timely filed return, including extensions. This gets missed often, and it matters most for lots paved relatively recently, where the leftover basis is still large.

1
Internal Revenue Service. Publication 946 (2025), How To Depreciate Property
2
Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One, Big, Beautiful Bill
3
Office of the Law Revision Counsel. 26 USC 179 – Election to Expense Certain Depreciable Business Assets
4
Internal Revenue Service. Instructions for Form 4562 (2025)
5
Internal Revenue Service. Tangible Property Final Regulations – Frequently Asked Questions
6
Internal Revenue Service. Examining a Taxpayer Electing a Partial Disposition of a Building