Irrigation and Sprinkler Business Deductions and Equipment Write-Offs

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

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

Irrigation and sprinkler businesses have a favorable cost structure for tax planning. Materials are relatively inexpensive (PVC pipe, sprinkler heads, valves, and controllers), typically running 25-35% of revenue. Labor is the primary cost, and workers’ compensation rates are among the lowest in the trades (3-6% of payroll) because the injury risk is lower than excavation or roofing. The business model combines new installations (higher revenue, one-time) with recurring service revenue (spring startups, fall winterizations, repairs). This recurring component makes income predictable and supports the case for an S-Corp election at lower income thresholds. Irrigation and sprinkler work is NOT a specified service trade or business (SSTB) under IRC 199A.

✓Key takeaway

Major deduction categories for irrigation and sprinkler businesses:

Equipment:

Walk-behind trencher: $5,000-$15,000
Ride-on trencher: $15,000-$30,000
Vibratory plow/pipe puller: $10,000-$30,000
Backflow test kit (certified): $500-$2,000
Wire and valve locator: $500-$2,000
Pressure gauge kit: $100-$500
PVC pipe cutter and tools: $100-$500
Solvent welding equipment: $50-$200
Compressor (for winterization blowouts): $500-$3,000
Controller programming tools: $100-$500
Sod cutter (for clean installations): $2,000-$5,000

Vehicles:

Service truck (pickup or van): $30,000-$55,000 (5-year MACRS, bonus depreciation)
Utility trailer: $2,000-$8,000
Equipment trailer: $3,000-$10,000

Materials (cost of goods sold):

PVC pipe (Schedule 40): $0.30-$2.00/ft depending on diameter
Poly pipe (flexible): $0.15-$1.00/ft
Sprinkler heads (rotors): $10-$40 each
Sprinkler heads (spray): $3-$10 each
Drip irrigation components: $0.10-$2.00/ft
Valves (electric): $15-$40 each
Controllers/timers: $50-$500 each (smart controllers $100-$500)
Backflow preventers: $50-$300 each
Rain sensors and smart sensors: $20-$100 each
Wire (for valve wiring): $0.10-$0.30/ft
Fittings, glue, primer: $200-$500/month

Recurring service supplies:

Winterization: compressed air (fuel cost only if own compressor, rental $50-$150/day if not)
Spring startup parts (replacement heads, broken fittings): $20-$100/job
Backflow testing supplies: $20-$50/test

Insurance (low rates):

General liability: $1,000-$3,000/year
Workers’ compensation (3-6% of payroll, among the lowest in trades)
Commercial auto: $1,500-$4,000/year
Inland marine: $300-$1,000/year

Licensing and certifications:

Backflow tester certification: $200-$500 (one-time, renewal $50-$200/year)
Irrigation contractor license (state-specific): $100-$500/year
EPA WaterSense partner (optional, free)
Continuing education: $100-$300/year

What’s the tax picture for an irrigation business?

Hypothetical example

Round numbers. A sole proprietor irrigation business in Year 2 (equipment already depreciated in Year 1). Three revenue streams:

Revenue breakdown:

Service	Jobs/Year	Avg. Price	Revenue
New installations	30	$4,000	$120,000
Spring startups	200	$75	$15,000
Fall winterizations	200	$85	$17,000
Repairs (in-season)	100	$200	$20,000
Backflow testing	150	$75	$11,250
Total			$183,250

Expenses:

Materials (new installations): $36,000
Materials (repairs): $4,000
Labor (1 helper, seasonal): $25,000
Vehicle expenses: $8,000
Insurance: $4,000
Marketing: $3,000
Phone, software, office: $3,000
Licensing and certification: $500
Total expenses: $83,500

Net profit: $99,750

Tax calculation (sole proprietor, single filer):

SE tax: $99,750 x 92.35% x 15.3% = $14,093
SE deduction: $7,047
Taxable income: $99,750 - $7,047 - $15,700 = $77,003
Income tax: approximately $11,900
QBI deduction (20% x $99,750 = $19,950): saves approximately $4,390
Adjusted income tax: approximately $7,510
Total tax: $14,093 + $7,510 = $21,603
Effective rate: 21.7%

S-Corp comparison (salary $50,000):

FICA on salary: $7,650 (employer + employee)
Income tax on $99,750 (K-1 not subject to SE): approximately $11,900
QBI deduction: saves approximately $4,390
Total tax: approximately $15,160
S-Corp savings: $6,443/year

The S-Corp break-even for irrigation businesses is lower ($45,000-$55,000 net profit) because the low WC rate (3-6%) and low equipment costs mean most of the revenue flows to taxable profit.

Recurring revenue advantage: the 200 startup + 200 winterization + 150 backflow clients represent $43,250 in predictable annual revenue with minimal materials cost. This base alone nearly covers annual fixed costs, meaning new installation revenue is almost pure profit.

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

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Cite this page

Yarik Yarosh, CPA. "Irrigation and Sprinkler Business Deductions and Equipment Write-Offs." Blue Cloud CPA, September 5, 2026. https://bluecloudcpa.com/guides/irrigation-sprinkler-deductions-equipment

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