You may do this only with the informed consent of your client. TRELA Section 1101.652(b)(13) provides that a licensee's license may be suspended or revoked if the licensee accepts, receives, or charges an undisclosed commission, rebate, or direct profit on expenditures made for a principal. Also, Article 6 of the Code of Ethics prohibits REALTORS® from accepting any commission, rebate, or profit on expenditures made for their principal without the principal's knowledge and consent.
I'm a property manager. A tenant called me complaining that his roof was leaking. I checked with the owner and the owner gave the go-ahead for me to hire someone to fix the roof. The contractor fixed the roof and gave me a bill. The terms of the bill stated that if I pay the bill in full within two weeks, I would get a discount. If I pay the bill within two weeks, but the owner can't pay me until after two weeks, can I get a discount for paying early, but then charge the owner the regular price, keeping the difference for myself?