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by HWR_14 1522 days ago
> they dont have your deduction information though

Except for medical bills, mortgage deduction, education expenses, retirement/HSA/etc. accounts and SALT (if that gets reinstated) and maybe a couple of others, probably. Although, frankly, I'm not sure what deductions other than charitable contributions don't get reported to the IRS and I'm similarly not sure what deductible expenses don't already have a paper trail I would care about retaining. But that's where "correcting the math" would include replacing the standard deductions with itemization would come in.

I think requiring a basis for investment income to be made in the acquired year to the IRS is both reasonable and trivial.