If I don't know how much I've spent on home improvements in past years from HELOC, what do I put in the box that asks for that information?

[gagerdh]

I've itemized in past years but plan to use standard deduction this year.  In that case, does this matter?Attach files

[DDollar]

Make a reasonable estimate and enter it.  If you are using the Standard Deduction, it won't make any difference on your Federal tax return.  It could have an impact on your state return if they allow you to itemized for state even if you use the Standard Deduction for federal.