The direct answer
A percentage referral fee is the agreed rate applied to a defined commission basis. A flat referral fee is a fixed amount. Retained commission is that basis less the referral fee; it is not necessarily the agent’s final net after all other deductions.
Specify the commission basis
The base might be a gross commission amount or another agreed subtotal. The calculator accepts the amount directly and does not infer it from sale price. A 25% fee on a $12,500 commission is different from 25% of a $500,000 property price. Review the agreement and identify which party bears the charge; the model does not decide whether a referral arrangement is permissible.
To apply the approach to an editable scenario, use the Real Estate Referral Fee Calculator. For the neighboring question, explore Real Estate Commission Calculator.
Compare fixed and percentage scenarios
Percentage mode changes when the entered commission basis changes. A flat fee stays fixed in this arithmetic even if the commission basis is lower. It is possible to model a fee larger than the basis and obtain negative retained commission, which should prompt review of the assumptions. The calculation does not imply such a fee is payable under an actual agreement.
Follow subsequent deductions separately
A retained commission subtotal can still be subject to brokerage sharing, transaction charges or taxes. Use the agent commission model when those later layers matter, with a consistent deduction order. Do not feed an already net-of-referral amount into that model and then deduct the same referral again.
Worked example
A $12,500 commission basis and 25% referral rate give a $3,125 fee and $9,375 retained commission. A $1,000 flat referral on the same basis leaves $11,500. The two outcomes compare the entered fee structures, not their legal or commercial suitability.
Open Real Estate Referral Fee Calculator and test your assumptions →
Common mistakes and limitations
Do not assume the rate applies to property sale price. Gross commission, post-split commission and property price are different possible bases.
Referral-fee legality and disclosure requirements vary. Numerical calculator only.
Frequently asked questions
Does the tool create a referral agreement?
No. It calculates an entered fee structure and does not assess the agreement or licensing requirements.
Is retained commission the final take-home amount?
Not necessarily. Other splits, charges and taxes may apply outside this calculation.
Sources and further reading
The article’s examples are illustrative arithmetic. The references below provide context for operating, valuation or transaction concepts; they do not endorse the assumptions or the calculator.
- National Association of REALTORS® — 2026 Code of Ethics & Standards of PracticeBroker compensation is not set by law and is fully negotiable.
Read our editorial policy for the scope of these educational methods.