Visitor visa for cofounder interviews

I am bringing in an expert in my field for Cofounder interviews for my startup. Looks like his US visa needs me to send him an invitation letter + provide proof of funds. As a startup founder, my funds are limited in my checking account. I have a higher net worth and a good tax history (since my household income includes my wife). What documents do you recommend I provide to the consulate? My bank balances are BAD. Can I provide tax documents for 2023 instead?