The IRS typically selects returns for audit based on unusual or suspicious patterns, not the sheer length of a return.

I would assume asking proof of income on something like this is not unusual to request in a sale.

I want to make sure I'm not overlooking any potential risks or unusual requests in this counter offer.Thank you in advance for your help!

I mean the challenge is in complying with them with an unusual structure. 

People in a particular business saying that their product or service is great, they’ve done it hundreds of times and it’s been great, is not unusual, whether true or not.  

Somewhat unusual situation: we are in escrow on a property, and the current lender was going to underwrite the new loan.

In that case, the taxpayer had individuals testify to his character and work in court, which is an unusual scenario and highlights the difficulty of making such a claim.If the TP cannot qualify for REPS, they may still be eligible to claim material participation in the deals, even with less than 5% ownership in some of them.

The initial open house seemed to have about unusual turnout.  

I want to make sure I'm not overlooking any potential risks or unusual requests in this counter offer.Thank you in advance for your help!

These terms aren't unusual but may warrant negotiation or seeking alternative QIs who offer more balanced protections.