Free Deck Profit Calculator

Calculate material costs, labor, markup, and profit for any deck job in 60 seconds. FieldRate's deck profit calculator auto-sizes every joist, beam, and post to IRC residential code — so your estimates are structurally accurate, not guesswork.

How This Deck Profit Calculator Works

This calculator runs the same IRC-compliant takeoff engine that powers FieldRate's full estimating platform. Enter your deck's length, width, and height — the engine auto-sizes every joist, beam, and post to IRC span tables based on your lumber species, joist spacing, and load requirements (40 psf live / 10 psf dead). Material quantities are calculated from the structural layout, not rough per-square-foot averages.

Add your labor costs (crew day rate or per-square-foot rate), choose between markup and margin, and see your total quote price, profit, and cost breakdown instantly.

2026 Deck Cost Per Square Foot by Material

Pressure Treated: $8–$14/sqft materials, $25–$40/sqft installed. Cedar: $12–$20/sqft materials, $35–$55/sqft installed. Composite (Trex, TimberTech): $14–$24/sqft materials, $40–$65/sqft installed. PVC/Azek: $18–$30/sqft materials, $50–$80/sqft installed.

Markup vs. Margin: Which Should Deck Contractors Use?

Markup is applied on top of your costs: a 30% markup on $10,000 in costs gives a $13,000 quote and $3,000 profit. Margin is the percentage of the final price that's profit: a 30% margin on the same costs gives a $14,286 quote and $4,286 profit. The difference compounds on larger jobs. Read the full markup vs. margin guide.

IRC Structural Auto-Sizing Explained

Unlike simple cost-per-square-foot calculators, this tool sizes every structural member to the International Residential Code (IRC). The engine references IRC span tables for your selected lumber species and grade to determine the minimum joist size, beam configuration, and post sizes needed for a code-compliant deck.

Frequently Asked Questions

What profit margin should a deck contractor aim for?

Most successful deck contractors target 8–15% net profit margin, with 10–12% being the sweet spot. Overhead typically runs 13–22%, so your markup must cover both.

What's the difference between markup and margin?

Markup is added on top of costs. Margin is the percentage of the final price that is profit. A 30% markup on $10,000 = $13,000 quote. A 30% margin on $10,000 = $14,286 quote.

How much does it cost to build a deck per square foot in 2026?

Pressure-treated: $25–$40/sqft installed. Cedar: $35–$55/sqft. Composite: $40–$65/sqft. Costs vary by region, height, and complexity.

Does this calculator account for IRC structural requirements?

Yes. Joists, beams, and posts are auto-sized to IRC span tables based on your lumber species, grade, spacing, and load requirements.

How accurate is this free deck calculator?

Material quantities are based on actual structural layouts, not averages. For rectangular decks the accuracy is very close to a full takeoff.

Is this calculator really free?

Completely free, no signup required. For advanced features try FieldRate Pro free for 14 days.

Want the Full Experience?

Draw any deck shape, see every joist and beam visualized in real-time, generate cut-optimized material lists, and export professional PDF proposals with FieldRate Pro.

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