what embassy are you trying at? what kind of DTV visa are you going for? what is your situation? I mean so much more information is needed to even try to help you
they didn't ask me for tax returns in laos vientiane but they did make me wait two weeks for an in person interview after paying 10k baht in laos vientiane all DTV visa have an in person interview in laos vientiane as of a couple months ago they posted a screen shot of a poster stated it , its really hard to find it ,grok over looked it. use grok AI helps a lot. if your from the USA you technically have 3 years to file back taxes . I was going to show them house property taxes if they asked but they never did. each embassy will be different i only know what laos vientiane embassy was like.