Concrete and Masonry Business Deductions: Mixers, Forms, Saws, the Skid Steer, and the Materials That Set Before You Bill

Concrete and masonry sit at the equipment-heavy end of the trades, and their tax picture is a depreciation schedule with a materials ledger beside it. The equipment: mixers (portable and towable), forms and form systems (reusable across jobs — equipment, not supplies, when they outlast a year), concrete saws and grinders, power trowels and screeds, compactors, the skid steer or mini-excavator, dump trailers and equipment trailers, generators, scaffolding for masonry work, and the hand tools — recovered by section 179 expensing (income-limited; the annual limit US$2,560,000 for 2026, phasing out above US$4,090,000 of purchases, raised and made permanent by the 2025 law), bonus depreciation (restored to 100% and permanent for property acquired after January 19, 2025; no income limit, so it can create a loss), or MACRS over the equipment's recovery period (five years for most construction equipment, seven for some) where the contractor prefers to spread the deduction; a skid steer or a form system is typically expensed in the year placed in service by a profitable contractor, and the choice is made asset by asset on the first return after purchase. The de minimis safe harbor: items under the per-invoice threshold (US$2,500 per invoice or item) — hand tools, trowels, floats, small forms, blades, and consumables — expensed with the annual election on the return, never touching the depreciation schedule. The trucks and trailers: the work trucks (standard mileage or actual expenses — the vehicle method choice, with actual expenses and section 179 or bonus depreciation for a newly purchased heavy-duty truck over 6,000 pounds gross vehicle weight rating, which escapes the passenger caps — and for a truck that tows a loaded trailer daily, actual expenses win), the dump trailer and equipment trailer (equipment, expensed or depreciated), and the mileage log for the business-use percentage. The materials — the trade's distinctive ledger: ready-mix concrete (delivered per job, invoiced by the yard), bagged mix, rebar and mesh, block, brick, stone, mortar and sand, sealers, and the forms' consumables — a large share of revenue (30% to 50% on flatwork, higher on masonry with expensive stone), bought per job and consumed on it, so materials are job costs coded to the job in the job-cost system (the construction bookkeeping guide) and expensed as consumed; the inventory question is limited to stocked items (a pallet of block, bags of mortar, rebar on the yard) — inventory in principle, expensed as consumed under the small-business method with a year-end count to reconcile — and the trade's specific issue is the poured-and-set materials: concrete delivered and poured on a job that isn't billed until completion is a job cost incurred before the revenue is earned, which the job-cost system tracks as work in progress and the cash method (which most small concrete contractors elect for tax) deducts when paid regardless of billing — the timing that makes a December pour deductible in the prior year and its January billing taxable in the next, a legitimate result of the cash method the contractor should understand rather than be surprised by. The labor: crews on payroll (with workers' compensation for one of construction's higher-risk trades — heavy materials, saws, and lifting — priced accordingly), the classification question (a laborer who works only for the contractor on its schedule with its equipment is an employee — the classification guide), and subcontractors for specialties (pumping, finishing, cutting) with W-9s and 1099s (the subcontractor guide); prevailing wage and certified payroll on public jobs (sidewalks, curbs, municipal flatwork — the construction setup guide). The yard and shop: a rented yard for equipment and materials storage is rent; an owned yard is land (nondepreciable) with improvements (fencing, gravel, a shop building — depreciable on their own lives, with land improvements at fifteen years and a shop at thirty-nine); a yard attached to the owner's home is the home office rules' separate-structure case. Seasonality: concrete and masonry work runs March through November in northern markets (the ground and the mix both need workable temperatures), with a winter shutdown that stops revenue and continues the equipment loan payments — the estimated-tax consequences (the concrete estimated-tax guide) start with a reserve built in the season, and the equipment purchase timing matters (a skid steer bought in November is placed in service that year and expensed against that year's profit, or bought in March against the next). Other deductions: liability insurance (and the completed-operations coverage concrete work needs — a slab that cracks is a claim); the trucks' commercial policies; equipment insurance; licensing (the contractor's license where required; the specialty licenses in some states); permits and inspections (job costs, coded); disposal (concrete and debris dumping fees — job costs); fuel for equipment (separate from the trucks' fuel — a job cost or an equipment operating cost); equipment repairs and maintenance (expensed; a rebuilt engine on the skid steer may be an improvement to capitalize — the repair-versus-improvement line); software (estimating and job costing); the bond premiums on bonded jobs; and marketing. Sales tax: the concrete contractor is the consumer of materials in most states (tax paid on ready-mix, block, and rebar at purchase; none charged on the installed work — the construction sales tax guide), with the retailer-rule states and the exempt-entity certificate procedures on municipal work as the exceptions to know. Entity and self-employment: concrete and masonry is not a specified service trade, so the qualified business income deduction applies at all income levels (subject to the wage-and-property limitation, satisfied by a contractor with crew payroll and equipment); the S election arithmetic (the concrete entity guide) runs on profit above a reasonable salary for a working owner-operator. The bookkeeping: a fixed asset schedule (every machine, trailer, and form system with method and life), the de minimis election annually, materials coded to jobs with the work-in-progress tracked, the year-end yard count, crew payroll and classification documented, subcontractor W-9s and 1099s, equipment fuel and repairs separated from truck costs, and the seasonal reserve. The deductions concrete contractors miss: form systems treated as supplies and expensed piecemeal without a schedule (or, the reverse, hand tools capitalized); the skid steer depreciated over seven years in a year that could have expensed it; disposal and permit fees booked as overhead rather than job costs (destroying the job cost report); and the December pour's cash-method timing misunderstood at the first return.

Key takeaways

• Equipment is recovered by section 179, bonus depreciation, or five-to-seven-year MACRS — chosen asset by asset; form systems that last beyond a year are equipment on the schedule, hand tools and consumables are de minimis.
• Heavy trucks on actual expenses (towing a loaded trailer daily makes standard mileage the smaller deduction; over 6,000 pounds escapes the passenger caps); trailers are equipment.
• Materials are job costs coded to jobs and expensed as consumed; stocked block, mortar, and rebar get a year-end yard count; the December pour is deductible when paid under the cash method even if billed in January.
• Crews on payroll with workers' comp priced for a high-risk trade; specialty subcontractors with W-9s and 1099s; prevailing wage on public jobs.
• The consumer rule governs sales tax in most states — tax paid on ready-mix and block at purchase; retailer-rule states and exempt-entity certificates are the exceptions.
• Not a specified service trade; the March–November season makes the reserve and the equipment purchase timing part of the plan.

The concrete contractor's deduction checklist

Fixed asset schedule: mixers, forms, saws, skid steer, trailers, trucks — method and life. De minimis election; small-tool receipts. Trucks: actual expenses; mileage log. Materials: job-coded; work in progress tracked; year-end yard count. Crews: payroll, workers' comp, classification; subcontractor W-9s and 1099s; certified payroll on public jobs. Yard: rent or land-and-improvements. Insurance (completed operations), licenses, permits and disposal as job costs, equipment fuel and repairs separated, software, bonds, marketing. Sales tax: consumer rule; certificates on exempt jobs. Seasonal reserve. The schedule and the job coding are the two items that can't be rebuilt in April.

Worked example

A concrete flatwork and masonry contractor grosses US$780,000 with a four-person crew, US$310,000 of materials, a rented yard, and this year's purchases — a skid steer (US$58,000) and a form system (US$22,000). Equipment: the skid steer and the form system expensed under bonus depreciation (the business is profitable and the write-off doesn't create a loss); the new saw blades, trowels, floats, and small forms (US$5,400 across many invoices) expensed under the de minimis election; the dump trailer bought last year is on the schedule on its five-year life. Trucks: two heavy-duty pickups on actual expenses at 95% business use (the log supports it), one of them bought two years ago with bonus depreciation taken. Materials: every ready-mix delivery, rebar order, and block pallet coded to a job; the December pour for a commercial slab (US$14,000 of concrete paid in December, billed in January) deductible this year under the cash method — understood in advance, not discovered in April; a year-end yard count of US$6,200 of block and mortar reconciled. Crews: four on payroll with workers' compensation at the trade's rate; a pumping subcontractor with a W-9 and a 1099; certified payroll on the two municipal sidewalk jobs. Job costs: permits, inspections, and disposal fees coded to jobs (the job cost report shows the municipal work at a thinner margin than the residential — the certified payroll's administrative cost, visible because it was coded). Sales tax: consumer rule in his state — tax paid on materials; the exempt-entity certificate obtained for the municipal jobs before purchase. Net profit after the equipment write-offs lands in the low six figures — an S corporation already (the entity guide), with the owner's salary set from market data for a working foreman-owner, the QBI deduction applying in full. The prior preparer's errors — the form systems expensed piecemeal with no schedule, disposal fees in overhead, and the December pour's timing "corrected" by an adjustment that undid the cash method's result — are the reason the checklist is on the wall of the yard office.

Official sources

Publication 946 states that "this publication explains how you can recover the cost of business or income-producing property through deductions for depreciation (for example, the special depreciation allowance and deductions under the Modified Accelerated Cost Recovery System (MACRS))," and covers the section 179 election and its limits. — Internal Revenue Service, Publication 946, How To Depreciate Property, https://www.irs.gov/publications/p946

The IRS states that under the de minimis safe harbor, "if you don't have an applicable financial statement (AFS), you may use the safe harbor to deduct amounts up to $2,500 ($500 prior to Jan. 1, 2016) per invoice or item (as substantiated by invoice)," with the election made annually on a timely filed return. — Internal Revenue Service, Tangible property final regulations, https://www.irs.gov/businesses/small-businesses-self-employed/tangible-property-final-regulations

Practitioner note

Concrete and masonry is a depreciation schedule with a materials ledger, and the two errors we inherit most are opposite: form systems expensed piecemeal with no schedule, and the skid steer depreciated over seven years in a year that could have expensed it. Our contractor files put every machine and form system on the schedule with its method, code every yard of ready-mix and every permit to a job, and explain the December pour's cash-method timing before the first return — because the job cost report only works if disposal fees and permits stopped being overhead.

See also: For related guidance, see the concrete and masonry entity decision; and browse every small business tax guide, by situation.

Next step

Fairlight handles concrete and masonry contractor returns and bookkeeping — equipment depreciation elections and the fixed asset schedule, job-coded materials with work-in-progress and yard counts, crew payroll and subcontractor compliance, sales tax under the consumer rule, and the seasonal reserve. See pricing or book a call.