Interactive cap math

Section 179 + bonus depreciation calculator

Compute federal and state Year-1 deduction for any indexed work vehicle. Adjust purchase price, business-use %, tax year, and state — outputs update live with a hand-traced arithmetic walk-through. Inputs never leave your browser (client-side only, no analytics on calculator state).

Make

Model

Trim

Purchase price ($)

Business-use percentage: 100%

Tax year

State of business

Total §179 property placed (incl. this vehicle)

Defaults to just this vehicle. Increase if your business is placing other §179 property in service this year — affects phase-out.

First-year deduction

Federal Year-1

$65,000

§179: $31,300 · Bonus dep: $33,700

State Year-1 (TX)

$65,000

§179: $31,300 · Bonus dep: $33,700

How we got there: Step 1: Qualifying basis = $65,000 × 100% = $65,000. Step 2: Ford F-150 (Regular Cab 4x2) GVWR 6,100 lb > 6,000 lb → §179(b)(5) heavy-vehicle treatment applies. Step 3: §179 phase-out — total property $65,000 below $4,000,000 threshold → no reduction. Step 4: §179 federal = min($65,000, $31,300 SUV cap) = $31,300. Step 5: Remaining basis after §179 = $33,700. Bonus depreciation federal = 100% × $33,700 = $33,700 (post-OBBBA P.L. 119-21 100% restored). Step 6: Federal first-year total = $31,300 + $33,700 = $65,000. Step 7: Texas §179 conforms to federal. State §179 = $31,300. Step 8: Texas conforms to federal §168(k). State bonus dep = $33,700. Step 9: State first-year total = $31,300 + $33,700 = $65,000.

IRS Pub 946 IRC §179 IRC §168(k)