What is GCI?
Gross Commission Income (GCI) is the total commission earned from all real estate transactions in a given period — before any deductions. If a property sells for $700,000 at a 3% commission rate, the GCI from that transaction is $21,000. That number represents your gross revenue contribution, before your brokerage takes its split or any other fees are applied.
GCI is the most fundamental metric in a real estate agent's business. It determines tax obligations, drives income forecasts, and is the basis for calculating every other performance metric.
How to calculate GCI
For a single transaction, GCI is straightforward:
GCI = Sale Price × Commission Rate (your side)
For a full year or quarter, GCI is the sum of all commissions earned across every transaction you closed in that period. Both buyer-side and seller-side transactions count separately — each represents its own commission income.
Example
An agent closes 18 transactions in a year across a mix of buyer and seller sides, with sale prices ranging from $350,000 to $900,000 and an average commission rate of 2.5% per side. If the total transaction value is $10.2 million, the agent's GCI is approximately $255,000.
Why GCI is not the same as income
A common mistake is treating GCI as take-home income. In reality, GCI is gross revenue. From this number, several deductions reduce what the agent actually keeps:
- Brokerage commission split — typically 15–30% of GCI
- Per-transaction fees — $200 to $600+ per closed deal
- Monthly desk or franchise fees — a fixed recurring cost
- Business expenses — marketing, MLS, insurance, technology
- Income tax and CPP — federal and provincial obligations
An agent earning $200,000 GCI may net $110,000–$130,000 before tax after all deductions. Understanding the gap between GCI and net income is essential for accurate financial planning.
Why GCI matters for forecasting
GCI is the input for every meaningful projection an agent needs. Your year-end income forecast, quarterly tax estimate, financial runway calculation, and pipeline valuation all start from GCI. Without accurate, real-time GCI tracking, all downstream metrics are unreliable.
Tracking GCI monthly — and comparing each month's contribution against seasonality-adjusted expectations — gives agents the clearest signal of whether they are ahead of or behind their annual goal.