There are two problems with that: The one that affects most people is that the IRS system is "eventually consistent", but they do not currently have the inform

There are two problems with that: The one that affects most people is that the IRS system is "eventually consistent", but they do not currently have the information needed to file your return on the date your return is due. If you don't believe me, request your transcript-of-records* on your account filing date. Then request it again in early fall. The latter will, IME, be complete while the former will not. * - https://www.irs.gov/individuals/get-transcript https://www.irs.gov/individuals/get-transcript The one that affects only a subset of people is that many deductible items that go into tax returns are never shared with the IRS at all and only the taxpayer knows about them (today).