How do you calculate commission on a sale?

The basic commission formula is: Commission = Sale Price × Commission Rate. For example, a $300,000 home sale at 3% yields $9,000 gross commission. If you have a 70/30 broker split, your take-home is $9,000 × 70% = $6,300. For car sales, subtract the dealer pack first: (Gross Profit − Pack) × Commission Rate = Your Commission.

Step-by-step commission calculation guide with notebook and calculator

How to Calculate Commission — 2026 Guide

The complete step-by-step guide for calculating commission in every industry. Real estate, car sales, SaaS, insurance, and B2B — with worked examples for each.

The Basic Formula: Commission = Sale Amount × Commission Rate. For most roles, then apply your split: Net Commission = Gross Commission × Your Split %. For car sales, subtract the dealer pack first. For real estate, the commission rate is applied to sale price, not profit. Jump to your industry below for the exact calculation.

The Universal Commission Formula

The foundation of every commission calculation is the same: multiply the sale amount (or gross profit) by the commission rate. What varies by industry is what counts as the "sale amount" and what deductions apply before or after the percentage is calculated.

Step 1: Identify Your Base Amount

Different industries use different bases. Real estate commissions are calculated on the full sale price of the property. Car sales commissions are calculated on gross profit (sale price minus dealer cost), not the sale price. SaaS commissions are calculated on Annual Contract Value (ACV). Insurance commissions are calculated on the policy premium.

Step 2: Apply Your Commission Rate

Multiply your base amount by your commission rate as a percentage. If your rate is 3%, divide by 100 to get 0.03, then multiply by the base amount. Example: $500,000 × 0.03 = $15,000 gross commission.

Step 3: Apply Deductions and Splits

Most salespeople share commission with a broker, employer, or referring agent. Multiply the gross commission by your split percentage to get your take-home amount. Example: $15,000 × 0.70 = $10,500.

Step 4: Account for Industry-Specific Fees

Car salespeople subtract dealer pack fees from gross profit before applying their commission rate. Real estate agents may deduct referral fees after calculating net commission. SaaS reps may have draw amounts to recover. Each industry has its own fee layer — see the examples below.

💡 2026 Commission Calculation Insight

The most common mistake when calculating commission is confusing gross commission with net commission. Your gross commission is what the deal generates. Your net commission is what ends up in your bank account after broker splits, referral fees, or draw deductions. Always calculate both so you know exactly what you earned — and what to expect on your paycheck.

Last Verified: August 2026 | Verified by: MyCommissionCalc Research Team

Commission Calculation by Industry

Real Estate Commission Calculation

Formula: Sale Price × Commission Rate × Agent Split (× referral deduction if applicable)

Example: $600,000 home at 2.8% listing commission, 75/25 broker split:
$600,000 × 0.028 = $16,800 gross commission
$16,800 × 0.75 = $12,600 agent take-home

Car Sales Commission Calculation

Formula: (Sale Price - Dealer Cost - Pack Fee) × Commission Rate, with mini deal floor

Example: $36,000 sale, $33,000 cost, $1,000 pack, 25% commission:
Gross profit: $36,000 - $33,000 = $3,000
After pack: $3,000 - $1,000 = $2,000
Commission: $2,000 × 0.25 = $500 front-end commission

SaaS / B2B Commission Calculation

Formula: Deal ACV × Commission Rate, with accelerator if above quota

Example: $80,000 ACV deal at 10% commission, 110% quota attained:
Base commission: $80,000 × 0.10 = $8,000
Accelerator on 10% above quota (at 15% rate): extra $400
Total: $8,400

Tiered Commission Calculation

Tiered commissions assign different rates to different sales volume levels. Calculate each tier separately, then add them together.

Example: 5% on first $100,000, 7% on $100,001–$250,000, 10% above $250,000. If you sell $320,000:
Tier 1: $100,000 × 5% = $5,000
Tier 2: $150,000 × 7% = $10,500
Tier 3: $70,000 × 10% = $7,000
Total: $22,500

Use the Calculator: Instead of doing this math manually, use our commission calculator for instant results. Industry-specific calculators for real estate and car sales handle all deductions automatically.

Related Guides

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✅ Reviewed by Alex Mercer — Lead Commission Research Analyst

Commission formulas verified against primary sources including NAR, BLS, and automotive industry benchmarks. Logic audit verified August 2026. Report a Data Error

Data source: BLS Sales Occupations

"The core formula for commission calculation — sale amount multiplied by commission rate — applies universally across industries. Variables including broker splits, dealer packs, and referral fees must be subtracted sequentially to arrive at net take-home compensation." — FINRA Investor Education Foundation, Compensation Transparency Guidelines