You'd have to be more detailed.And yes, most listing agreements will call for the agent to colect a percentage of any forfeited deposit-because a deposit is only forfeited when a buyer was procured/under contract, and then defaulted.

You could just ask the seller to pay a specific amount of the buyers closing cost: "Seller agrees to pay $1,000 of the buyers closing costs and in addition agrees to forfeit any tax prorates and/or reserves to the buyer at closing."

I just want to make sure that I am able to fully validate all of the financials and not on the hook/forfeit my deposit if the numbers do not match what's being advertised. 

If the Applicant gives notice of cancelling the rental agreement prior to November 24th, Applicant will forfeit one hundred fifty dollars ($150.00) of the Holding Deposit.

Buyer will have 3 business days from issuance of this notice to close – should buyer not close, seller is able to cancel thiscontract with earnest monies being forfeited to the seller." - And after all the above, they *still* give themselves this clause, which extends the closing date three business days!

I personally wouldn't accept it as a Landlord without mitigating the risk by charging a hefty non-refundable fee that is forfeited in case of cancellation.

After 72 hours, the full holding fee is forfeited if you back out. 

@Liam Dalbow Take the $1,000 you made in forfeited deposit money from the buyer, call a couple of real estate lawyers in your area.

Again, read through your standard purchasing sale contract for your state to understand how this earnest money can be forfeited or retained.

You may be forfeiting damage to the old fixture, but maybe saving from them doing more work.