Roofing Business: LLC vs. S-Corp, Tax Structure, and QBI Deduction

By Yarik Yarosh, CPA ·September 5, 2026 ·Updated October 4, 2026 ·5 min read

Written by Yarik Yarosh, CPA (US & Canada) September 5, 2026 · FL CPA license AC61704 · CPA Ontario

Roofing is a high-revenue, high-cost trade with a distinctive financial profile. The business is NOT a Specified Service Trade or Business (SSTB) under IRC 199A, meaning the full 20% QBI deduction applies at all income levels. Materials (shingles, underlayment, flashing, nails) are the largest single expense category, running 40-50% of revenue for residential shingle roofs and 35-45% for commercial flat/membrane roofs. Workers’ compensation insurance is among the highest of any trade: NCCI code 5551 (roofing) carries rates of 10-20% of payroll depending on the state and experience modification rating. This high workers’ comp burden makes the employee-vs-subcontractor classification particularly important (and frequently audited). Solo roofers are rare because the work physically requires at least 2-3 people; most roofing businesses hire employees or use subcontractor crews from early on.

✓Key takeaway

Roofing tax profile:

SSTB classification: NOT an SSTB

Roofing is a trade service
Full QBI deduction at all income levels
No phase-out above $266,950 (single) / $533,900 (MFJ)

Revenue model:

Residential shingle tear-off and replace: $8,000-$15,000/job
Residential overlay (no tear-off): $5,000-$10,000/job
Residential metal roof: $15,000-$30,000/job
Commercial flat roof (per square): $400-$800/square
Storm damage/insurance restoration: $10,000-$25,000/job
Gutter installation (add-on): $1,000-$3,000/job
Average residential roofing company: $300,000-$1,000,000/year
Solo/small crew (rare): $150,000-$400,000/year

Cost structure (residential shingle, crew-based):

Cost Category	% of Revenue
Materials (shingles, underlayment, etc.)	40-50%
Labor (employees or subs)	20-30%
Workers’ comp (NCCI 5551)	3-6% of revenue (10-20% of payroll)
Dump/disposal fees	2-4%
Equipment/vehicle	2-3%
Insurance (GL)	2-3%
Overhead (office, marketing)	3-5%
Net margin	10-20%

Major investments:

Equipment	Cost	Section 179
Truck (F-250/F-350)	$35,000-$60,000	Yes (over 6,000 lbs)
Dump trailer	$5,000-$15,000	Yes
Roofing nailer (pneumatic)	$300-$600	Yes
Air compressor (portable)	$500-$2,000	Yes
Safety equipment (harnesses, etc.)	$500-$2,000	Yes
Ladder/scaffold set	$1,000-$5,000	Yes
Shingle cutter/saw	$200-$500	Yes
Total equipment	$45,000-$85,000

S-Corp analysis:

Net margins are thinner than most trades (10-20% vs. 50-80% for service trades)
On $500,000 revenue with 15% net margin: $75,000 net profit
S-Corp break-even: approximately $70,000-$80,000 in net profit
Reasonable salary: $45,000-$65,000 (roofing company owners/foremen earn $50,000-$80,000 as employees)
The thin margins mean S-Corp savings are modest in absolute terms relative to revenue

How should a roofing business be structured for taxes?

Hypothetical example

Round numbers. A roofing company owner with one crew (3 employees). Year 2. Single filer.

Revenue: $500,000

40 residential roofs at $12,000 average: $480,000
Gutter add-ons: $20,000

Expenses: $420,000

Materials: $210,000 (42% of revenue)
Employee wages (3 workers): $120,000
Workers’ comp (15% of payroll): $18,000
Employer FICA (7.65% of payroll): $9,180
Dump/disposal fees: $15,000
Truck and vehicle expenses: $12,000
Insurance (GL + auto): $10,000
Equipment maintenance: $5,000
Marketing/advertising: $8,000
Office/admin: $5,000
Phone/software: $3,000
Subcontractors (overflow): $4,820

Net profit: $80,000

Sole proprietorship:

SE tax: $80,000 x 92.35% x 15.3% = $11,299
QBI: $80,000 x 20% = $16,000
Taxable: $80,000 - $5,650 - $15,000 - $16,000 = $43,350
Income tax: $5,190
Total: $16,489
Effective rate on net: 20.6%
Effective rate on revenue: 3.3%

S-Corp ($45,000 salary):

FICA on salary: $45,000 x 15.3% = $6,885
Distribution: $80,000 - $45,000 - $3,443 (employer FICA) = $31,557
QBI: $31,557 x 20% = $6,311
AGI: $80,000 (salary + distribution, minus employer FICA already deducted above)
Taxable: $76,557 - $15,000 - $6,311 = $55,246
Income tax: $6,881
S-Corp costs: $2,400
Total: $16,166
S-Corp saves: $323/year. Barely worth it at $80,000 net.

At $120,000 net profit (good year with storm damage work): Sole prop: $26,700 S-Corp ($50,000 salary): $22,200 S-Corp saves: $4,500. Now it’s worth it.

The lesson for roofing: because net margins are thin (10-20%), you need higher REVENUE to reach the net profit level where S-Corp pays off. A $500,000 roofing company with 15% margins ($75,000 net) barely benefits from S-Corp. A $750,000 company with the same margins ($112,500 net) benefits significantly.

Materials management and tax timing: Roofing materials sitting in your yard at December 31 are inventory (not deductible until installed). For businesses with average gross receipts of $32M or less (2026), you can elect to treat materials as non-incidental supplies (deductible when used), which avoids formal inventory accounting. But the practical rule: don’t buy a truckload of shingles in December for January jobs unless you’re prepared to capitalize the cost.

Storm damage / insurance restoration work: Storm work is the highest-margin segment of residential roofing because:

Insurance pays retail pricing (no negotiation on materials)
Volume spikes (5-20 roofs in a week vs. 1-2)
Supplements increase the per-job revenue 15-30%
Demand premium: homeowners pay what’s needed to get their roof fixed now

Tax implication: a storm event can add $100,000-$300,000 in revenue in a single quarter. If this happens in Q3 or Q4, the estimated tax for that quarter must account for the spike. The annualized method handles this automatically; equal quarterly payments will under-withhold.

Employee vs. subcontractor (critical for roofing): The IRS and state labor departments audit roofing companies for worker misclassification more than almost any other trade. Using subcontractor crews to avoid workers’ comp (at 10-20% of payroll) is the #1 motivation for misclassification, and it’s the #1 thing auditors look for.

If workers are reclassified as employees:

Back payroll taxes: 7.65% employer FICA on ALL compensation
Back workers’ comp premiums: 10-20% of ALL compensation
Penalties: 1.5% of wages + $50/unfiled W-2 + state penalties
Interest on everything
A 3-year lookback on a $120,000/year crew = $50,000-$80,000 in back taxes and premiums

Illustrative numbers only, not a real client and not advice for your facts.

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Cite this page

Yarik Yarosh, CPA. "Roofing Business: LLC vs. S-Corp, Tax Structure, and QBI Deduction." Blue Cloud CPA, September 5, 2026, updated October 4, 2026. https://bluecloudcpa.com/guides/roofing-contractor-entity-structure-scorp

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.