The §280F Lease Inclusion Amount, Actually Computed: A 2026 Worked Example (Rev. Proc. 2026-15)

Published: September 23, 2026 · Reading time: 10 min

TL;DR: Every guide to leasing a business vehicle — including this site's own leased-car guide — mentions the §280F lease inclusion amount and stops at "it's small or zero for most cars." None of them run the actual numbers. This post does, using the real 2026 dollar table from Rev. Proc. 2026-15: a $82,000 SUV on a mid-year 36-month lease computes to a total inclusion of $609.68 over the whole lease — genuinely tiny, and it demonstrates the stub-year proration trap from Treas. Reg. §1.280F-7(a) that most freelancers never hit correctly. A $150,000 vehicle on a calendar-aligned 5-year lease computes to $7,099.00 — about 10.7% of a comparable owner's 5-year depreciation ceiling, which is not "zero" by any reasonable reading, and it demonstrates that the last-year column-reuse rule applies to any multi-tax-year lease, not just one with a mid-year stub. And IRS Publication 463 settles a framing question every existing guide leaves fuzzy: the inclusion amount is not added to income for a self-employed lessee — it reduces your Schedule C Line 20a lease-payment deduction instead.

If you lease a vehicle for your freelance business and use the actual-expense method, you've probably read that an expensive lease triggers a "lease inclusion amount" — and you've probably read that it's small enough not to worry about. That's usually true. But "usually true" and "here's the number" are different things, and every post on this site and elsewhere that mentions the rule stops at the first one. This post computes the second, using the actual 2026 IRS table, the actual regulatory formula, and two vehicles at different price points — one where the number really is negligible, and one where it isn't.

Why This Rule Exists

Buy an expensive passenger car for business use and §280F caps how much depreciation you can deduct each year, no matter what the car actually cost. Without a matching rule for leases, a taxpayer could simply lease the same expensive car instead of buying it and deduct the full lease payment every year, sidestepping the caps entirely. Rev. Proc. 2026-15 states the mechanism directly:

"Section 280F(c)(2) requires a reduction to the amount allowable as a deduction to the lessee of a leased passenger automobile. Pursuant to § 280F(c)(3), the reduction must be substantially equivalent to the limitations on the depreciation deductions imposed on owners of passenger automobiles. Under § 1.280F-7(a), this reduction is accomplished by requiring the lessee to include in gross income an amount determined by applying a formula to a dollar amount obtained from a table."

That's the parity logic: a lessee of an expensive car has to give back roughly what an owner of the same car would have lost to the depreciation caps. The mechanics of "applying a formula to a dollar amount obtained from a table" are exactly what most guides never walk through — so here's the table, the formula, and two full computations.

The 2026 Table — Rev. Proc. 2026-15, Table 3

Every year the IRS publishes updated depreciation-limitation tables for vehicle owners (Tables 1 and 2) and a lease-inclusion dollar table for vehicle lessees (Table 3), adjusted for the automobile price inflation adjustment required by §280F(d)(7) — 23.468% for 2026, applied to the 2018 base limits and rounded to the nearest $100. For 2026, that produces:

Owner depreciation caps (for scale — Rev. Proc. 2026-15, Tables 1 & 2):

Lessee inclusion amounts (Rev. Proc. 2026-15, Table 3) — the two brackets used below:

Table 3 covers leases with a fair market value up to $500,000, in $2,000 bands at the low end, widening to $5,000 and then $10,000 bands as FMV rises, plus a final "$500,000 and over" row; IRS Publication 463 directs taxpayers with an FMV above $100,000 to use the revenue procedure's table directly rather than the publication's own appendix, which stops at $100,000 — which is exactly the situation the second worked example below is in.

The Three-Step Formula (Treas. Reg. §1.280F-7(a)(2))

The regulation lays out the computation in three steps, and IRS Publication 463 restates them for taxpayers almost verbatim:

"Go across the line to the column for the tax year in which the car is used under the lease to find the dollar amount. For the last tax year of the lease, use the dollar amount for the preceding year. Prorate the dollar amount from (1b) for the number of days of the lease term included in the tax year. Multiply the prorated amount from (2) by the percentage of business and investment use for the tax year."

That's the whole mechanism — three multiplications and one special-case rule most explanations quietly drop: the last tax year uses the preceding column, not the next one in sequence. Both the regulation's own 1987 example and Publication 463's own 2025 example confirm this identical rule with the identical phrasing. It matters because a lease term measured in months almost never lines up with a taxpayer's calendar tax year — a 3-year lease that starts on any date other than January 1 touches four tax years, not three, and the fourth (stub) year doesn't get its own new column.

Worked Example 1: A $82,000 SUV, Mid-Year 36-Month Lease

A freelance management consultant leases a $82,000 SUV for client site visits, signing a 36-month lease that begins April 1, 2026 and runs through March 31, 2029. Business use is 90% in 2026 and 2027 (heavy travel), then drops to 70% starting in 2028 after picking up more remote-only clients. Because the lease begins mid-year, it touches four calendar tax years — 2026, 2027, 2028, and a 2029 stub — even though the lease term itself is only three years.

node -e "
const fmt = n => n.toLocaleString('en-US', {minimumFractionDigits:2, maximumFractionDigits:2});

// Rev. Proc. 2026-15, Table 3, FMV bracket \$80,000-\$85,000: 112 / 244 / 360 / 431 / 496
const t1 = { y1: 112, y2: 244, y3: 360, y4: 431, y5: 496 };

const ex1years = [
  { label: '2026 -- 1st tax year during the lease',
    dollar: t1.y1, leaseDays: 275, yearDays: 365, bu: 0.90 },
  { label: '2027 -- 2nd tax year during the lease',
    dollar: t1.y2, leaseDays: 365, yearDays: 365, bu: 0.90 },
  { label: '2028 -- 3rd tax year during the lease',
    dollar: t1.y3, leaseDays: 366, yearDays: 366, bu: 0.70 },
  // 2029 is the LAST tax year during the lease, and the lease does NOT begin and end
  // within it (it ends March 31, partway through the calendar year). Per Treas. Reg.
  // Sec. 1.280F-7(a)(2)(i), that means using the PRECEDING (3rd-year) column -- \$360 --
  // not the 4th-year column (\$431).
  { label: '2029 -- last tax year (uses PRECEDING 3rd-yr column, not the 4th)',
    dollar: t1.y3, leaseDays: 90, yearDays: 365, bu: 0.70 },
];

let ex1total = 0;
for (const y of ex1years) {
  const prorated = y.dollar * (y.leaseDays / y.yearDays);
  const inclusion = prorated * y.bu;
  ex1total += inclusion;
  console.log(y.label);
  console.log('  Table 3 dollar amount:', fmt(y.dollar));
  console.log('  Proration:', y.leaseDays + '/' + y.yearDays, '=', (y.leaseDays / y.yearDays).toFixed(6));
  console.log('  Prorated amount:', fmt(prorated));
  console.log('  x business/investment use', (y.bu * 100) + '%', '=', fmt(inclusion));
}
console.log('TOTAL inclusion amount, full 36-month lease:', fmt(ex1total));
"

Output:

2026 -- 1st tax year during the lease
  Table 3 dollar amount: 112.00
  Proration: 275/365 = 0.753425
  Prorated amount: 84.38
  x business/investment use 90% = 75.95
2027 -- 2nd tax year during the lease
  Table 3 dollar amount: 244.00
  Proration: 365/365 = 1.000000
  Prorated amount: 244.00
  x business/investment use 90% = 219.60
2028 -- 3rd tax year during the lease
  Table 3 dollar amount: 360.00
  Proration: 366/366 = 1.000000
  Prorated amount: 360.00
  x business/investment use 70% = 252.00
2029 -- last tax year (uses PRECEDING 3rd-yr column, not the 4th)
  Table 3 dollar amount: 360.00
  Proration: 90/365 = 0.246575
  Prorated amount: 88.77
  x business/investment use 70% = 62.14
TOTAL inclusion amount, full 36-month lease: 609.68

$609.68 total, spread across four tax returns, on an $82,000 vehicle. This is what "small" actually looks like in dollars — and it's exactly why the corpus of guides that stop at "it's small or zero" aren't wrong about this vehicle. The 2029 line is the one almost every informal walkthrough gets wrong: a taxpayer who doesn't know the last-year rule would default to the "4th tax year" column ($431) instead of correctly reusing the 3rd-year column ($360), overstating that year's inclusion by $431 − $360 = $71 before even applying the proration and business-use percentage.

Worked Example 2: A $150,000 Vehicle, Calendar-Aligned 5-Year Lease

A different freelancer — a video production company owner — leases a $150,000 vehicle outfitted for equipment hauling, signing a clean 5-year (60-month) lease beginning January 1, 2026 and ending December 31, 2030. Because the lease starts on January 1 and runs exactly 60 months, every tax year lines up perfectly with a lease year — no stub-year proration is needed. But the last-year column-reuse rule is not a proration rule, and it still applies: Treas. Reg. §1.280F-7(a)(2)(i) triggers it "for the last taxable year during any lease that does not begin and end in the same taxable year," with no exception for a lease that happens to end on a tax-year boundary. This lease spans five separate tax years, so 2030 — its last year — has to reuse the 4th-year column, not advance to the 5th. Business use is 100% throughout (a dedicated production vehicle with no personal use).

node -e "
const fmt = n => n.toLocaleString('en-US', {minimumFractionDigits:2, maximumFractionDigits:2});

// Rev. Proc. 2026-15, Table 3, FMV bracket \$150,000-\$160,000: 499 / 1,093 / 1,621 / 1,943 / 2,242
const t2 = { y1: 499, y2: 1093, y3: 1621, y4: 1943, y5: 2242 };
const ex2years = [
  { yr: 2026, dollar: t2.y1, leaseDays: 365, yearDays: 365 },
  { yr: 2027, dollar: t2.y2, leaseDays: 365, yearDays: 365 },
  { yr: 2028, dollar: t2.y3, leaseDays: 366, yearDays: 366 },
  { yr: 2029, dollar: t2.y4, leaseDays: 365, yearDays: 365 },
  { yr: 2030, dollar: t2.y4, leaseDays: 365, yearDays: 365 }, // last year of a multi-year lease reuses the PRECEDING column (Treas. Reg. Sec. 1.280F-7(a)(2)(i)), even though this lease ends exactly on 12/31/30
];

let ex2total = 0;
for (const y of ex2years) {
  const inclusion = y.dollar * (y.leaseDays / y.yearDays) * 1.00; // 100% business use
  ex2total += inclusion;
  console.log(y.yr, '-> Table 3:', fmt(y.dollar), '| inclusion:', fmt(inclusion));
}
console.log('TOTAL inclusion amount, full 60-month lease:', fmt(ex2total));

const table1_5yr = 20300 + 19800 + 11900 + 7160 + 7160; // owner's Table 1 ceiling, same 5 years, for scale
console.log('Owner Table 1 (bonus depreciation) ceiling summed over 5 years:', fmt(table1_5yr));
console.log('This lessee total as % of that owner ceiling:', ((ex2total/table1_5yr)*100).toFixed(3)+'%');
"

Output:

2026 -> Table 3: 499.00 | inclusion: 499.00
2027 -> Table 3: 1,093.00 | inclusion: 1,093.00
2028 -> Table 3: 1,621.00 | inclusion: 1,621.00
2029 -> Table 3: 1,943.00 | inclusion: 1,943.00
2030 -> Table 3: 1,943.00 | inclusion: 1,943.00
TOTAL inclusion amount, full 60-month lease: 7,099.00
Owner Table 1 (bonus depreciation) ceiling summed over 5 years: 66,320.00
This lessee total as % of that owner ceiling: 10.704%

$7,099.00 — about 10.7% of what a comparable owner's 5-year depreciation ceiling would be on the same vehicle. That's a real number a taxpayer would want on their books, not a rounding error. The 2030 line is the one a calendar-aligned lease tempts you to get wrong: because the lease happens to end exactly on December 31, it's easy to assume the 5th-year column ($2,242) applies cleanly — but the last-year rule triggers on any lease spanning more than one tax year, not on whether the final year lines up with a boundary, so 2030 still has to reuse the 4th-year figure. Skipping that reuse would overstate the total by $2,242 − $1,943 = $299. The pattern across both examples: the inclusion amount scales with FMV far faster than it scales with the vehicle's price relative to the $62,000 threshold — a car at roughly 1.3× the threshold ($82,000) produces a five-figure-lease total under $1,000, while a car at roughly 2.4× the threshold ($150,000) produces a total over $7,000. "Small or zero" describes the first example. It stops describing the second.

Where the Number Actually Goes — Not Income, a Deduction Reduction

Rev. Proc. 2026-15's background section (quoted above) traces the mechanism to Treas. Reg. §1.280F-7(a), which frames it as requiring the lessee to "include in gross income" a table-derived amount — IRC §280F(c)(2) itself, by contrast, only directs a reduction to the lessee's deduction. For a self-employed lessee deducting the lease directly on Schedule C, IRS Publication 463 is explicit that the operative mechanic on the actual return is the deduction-reduction framing, not a separate income line:

"To do this, you don't add an amount to income. Instead, you reduce your deduction for your lease payment. (This reduction has an effect similar to the limit on the depreciation deduction you would have on the vehicle if you owned it.)"

The Instructions for Form 1040 Schedule C confirm exactly where that reduction happens:

"If you rented or leased vehicles, machinery, or equipment, enter on line 20a the business portion of your rental cost. But if you leased a vehicle for a term of 30 days or more, you may have to reduce your deduction by the inclusion amount."

So on Worked Example 1's return: the consultant's 2026 Line 20a deduction is the business-use portion of the 2026 lease payments, minus $75.95 — not $75.95 reported anywhere as separate income. Reporting the inclusion amount as Schedule C "other income" while also deducting the full, unreduced lease payment claims the reduction in the wrong direction and effectively doubles the benefit the rule exists to remove.

The Two-Part Gate — When None of This Applies

Before running any of the above, confirm both conditions are actually met:

1. Lease term of 30 days or more. A short repair-shop rental or weekend rental car never reaches this threshold regardless of the vehicle's value — see renting a replacement car while your business vehicle is repaired for the mechanics of a rental that falls under 30 days.
2. FMV above the year's published threshold at lease signing — $62,000 for a lease beginning in 2026 (Rev. Proc. 2026-15), unchanged from the $62,000 threshold that applied to 2024 and 2025 lease starts. IRS Publication 463 instructs using the capitalized cost stated in the lease agreement as the FMV when one is specified.

Fail either test and there's no computation to run at all — most ordinary sedans, crossovers, and even many trucks leased by freelancers never clear the FMV threshold in the first place.

Audit Triggers & Common Mistakes

1. Assuming "small or zero" without computing it. True for a vehicle just over the $62,000 threshold; false by a wide margin for a $150,000+ vehicle, where the total can run into four figures.
2. Advancing to the next sequential column in the lease's final tax year. The regulation and Publication 463 both require using the PRECEDING year's column for the last tax year of any lease that doesn't begin and end within the same tax year — that condition is about the lease spanning more than one tax year at all, not about whether the final year happens to end on a tax-year boundary. Worked Example 2 shows this: its lease ends exactly on December 31, and the rule still applies. Using the next column overstates that year's inclusion amount.
3. Prorating by the wrong denominator. The proration is lease-term days within the tax year divided by days in that tax year (365 or 366) — not days in the lease term overall.
4. Reporting the inclusion amount as separate income instead of reducing the Line 20a deduction. For a self-employed lessee, it's a deduction reduction, not an income line item — reporting both compounds the error.
5. Using Publication 463's own appendix tables above $100,000 FMV. The publication's appendices stop at $100,000; above that, the revenue procedure's own table (Table 3) is the source, as used in Worked Example 2 above.
6. Forgetting the rule doesn't apply to the standard mileage rate at all. There's no separate lease-payment deduction to reduce under that method, so switching methods sidesteps this computation entirely — see standard mileage vs. actual expenses for that decision.

How CentSense Helps

CentSense tracks the two inputs this entire computation depends on — your vehicle's lease details and your business-use percentage — automatically, instead of leaving you to reconstruct a multi-year table lookup at filing time:

• Business-use percentage calculated and logged every tax year from your recorded trips, which is the exact number the inclusion-amount formula's third step needs
• A running mileage log split automatically at the July 1, 2026 mileage-rate change, for freelancers weighing the standard rate against actual expenses on a leased vehicle
• Vehicle and lease details kept in one place across multiple tax years, so a multi-year inclusion-amount computation doesn't require digging up an old lease agreement in year three
• A CPA-ready expense export at tax time, with vehicle costs already separated from other Schedule C categories

For the broader lease-vs-buy decision this rule feeds into, see Lease vs. Buy a Business Vehicle and Mileage on a Leased Car.

Authoritative References

• IRS — Rev. Proc. 2026-15 (2026 passenger-automobile depreciation limitations and lease-inclusion table)
• 26 CFR §1.280F-7 — Property leased after 1986 (Cornell Law School Legal Information Institute)
• IRS — Publication 463: Travel, Gift, and Car Expenses (Leasing a Car; Inclusion Amounts)
• IRS — Instructions for Schedule C (Form 1040), Lines 20a and 20b
• IRS — Notice 2026-10 (2026 Standard Mileage Rates)
• Internal Revenue Bulletin 2026-29 — Announcement 2026-11 (mid-year 2026 mileage-rate revision, effective July 1, 2026)
• 26 U.S.C. §280F — Limitation on depreciation for luxury automobiles (Cornell Law School Legal Information Institute)

Stop guessing whether your leased vehicle's inclusion amount is "probably nothing." Start a free CentSense account, log business-use percentage automatically every year, and keep vehicle and lease details in one place so a multi-year §280F computation is a lookup, not a reconstruction project. Free tier includes 10 AI scans per month.

This guide is general education for U.S. self-employed freelancers filing a Schedule C in 2026. It is not personalized tax advice — your facts, your lease agreement's stated capitalized cost, and your actual year-by-year business-use percentage determine the correct inclusion amount. Consult a CPA or EA before relying on any computation here for a specific lease.