I do know that in the US, bank-account interests are taxable as passive incomes, but what I don't understand is the point of filing tax returns on bank account interests, since the government (or the IRS), or whatever, has access to bank accounts and can directly deduct taxes (not seizing, I'm not talking about unpaid taxes or fraud istances), without henceforth requiring a tax return filing, since they could deduct the money themselves.

3 Answers 3


A US citizen or recipient of US-generated income must file a US tax return if that person has been paid or received "income" more than a specified amount. (Specifying what is meant by any of these terms (i.e., "recipient," "US-generated income," "income," and "specified amount" varies considerably, is addressed by multiple IRS publications, and is beyond the scope of a general answer.)

Bank account interest is income. A return must be filed if the various conditions as to income are met. The conditions are set by the United States Code, as interpreted by the Rules adopted by the Department of Internal Revenue. Bank account interest was deemed to be "income" as a political decision made by the Congress, which enacted the Internal Revenue Code.

I am not a tax expert. As I observed in my Answer and Comments to your previous question on this subject, it is clear that the IRS can seize individual bank accounts pursuant to warrants of execution issued by state and federal courts. I believe, in addition, that it is possible that the IRS can unilaterally take similar against individual accounts. However, I have never heard of it doing so in cases of mere non-payment or without signifiant, multiple notices to the taxpayer. Such seizure seems only to occur in cases of tax resistance or tax avoidance, or persistant non-response by the taxpayer.

Why the IRS might (or might not) act in this manner might be explained by the IRS' desire to minimize doing things which many citizens and taxpayers might find immoral or politically unacceptable. Remember, the US tax system depends on voluntary participation by taxpayers. Proportionally few audits are actually conducted.

Beyond that, and whatever budgetary considerations might constrain IRS actions, your guess is as good as mine.

  • But in your previous answer you have also written that banks report interest-based incomes, so the only remaining option is that they cross check tax returns with those reports, although potentially the IRS could deduct taxes itself directly and electronically
    – abdul
    Commented Nov 17, 2019 at 18:20
  • 3
    Read this answer. The US system is not designed for automatic payments, as in other countries. It is designed for public participation and voluntary cooperation. It might have been designed and approached otherwise, but it wasn't set up that way and doesn't operate in that manner. Commented Nov 17, 2019 at 18:22
  • Ok, my mindset tries naturally to find the most convenient and hassle-free avenue to do things, which recently led me to ask this very question
    – abdul
    Commented Nov 17, 2019 at 18:24
  • So basically they avoid the easiest way to test the loyalty of their own people, along with their willingness to cooperate. It sounds like weird, but it's up to them. American culture never ends to surprise me.
    – abdul
    Commented Nov 17, 2019 at 18:26
  • which answer? Is ther a link?
    – abdul
    Commented Nov 17, 2019 at 18:32

US banks do report interest to the IRS. But the amount of tax on the interest cannot be computed solely on the basis of the amount of interest paid by the bank. The person's taxes depend on factors such as whether the person is married, blind, how many dependents the person has. The tax also depends on the person's total income, some of which is only reported by the person when the annual tax return is filed. For example, the person may run a retail business and receive many small payments, which are not reported by the payers to the IRS.

In short, the IRS does not automatically deduct the tax on interest from the account because the IRS is unable to compute what the tax should be.

  • How can they do audits then? I mean, on which basis are they able to make audits and eventually get suspicious?
    – abdul
    Commented Dec 18, 2019 at 19:52
  • They do a tiny number of random audits, where there is no suspicion. Most audits are triggered by suspicious situations. I am not an accountant or anything like that, so I can't explain how the IRS decides to audit people. But I do have a small business. There is no way for the IRS to know exactly how much profit a business made; it must rely to a considerable degree on what the business reports in their tax return. For employees who do not own a business, the IRS can come closer to estimating what their tax should be even before the tax return is filed. Commented Dec 18, 2019 at 21:11
  • It's pretty much complicated. But what are the consequences of not paying or not filing tax returns in the US? I know that these do.have importance in the other pond of the world (US), but here in the country I live in, it's mandatory, but only supposedly, to file tax returns, but I've never done it because of laziness and their bureaucracy isn't worth my time. I still haven't received any warning or reminder whatsoever.
    – abdul
    Commented Dec 18, 2019 at 21:24
  • @abdul the first sentence of this answer is correct. Banks file form 1099-INT to report interest that they pay to their account holders. They send a copy to the IRS and a copy to the payee. If the payee fails to report the interest on their income tax return, they can expect an adjustment with penalties and interest from the IRS. (Edit: the first version of this comment said "not correct" because I misread the first sentence of the answer.)
    – phoog
    Commented Dec 18, 2019 at 23:52
  • Gerard Ashton: it is also not possible to compute the amount of tax that will be due on earned income, yet the IRS nonetheless requires withholding on payments of earned income. So the argument that "the amount of tax on the interest cannot be computed solely on the basis of the amount of interest paid by the bank" does not by itself explain the lack of withholding. It does, however, explain why such a withholding system would not relieve account holders from the need to file tax returns, just as earned income withholding doesn't relieve workers of that burden.
    – phoog
    Commented Dec 19, 2019 at 0:11

The point of withholding, it should be noted, is not to prevent taxpayers from having to file tax returns. The exact tax liability for the year cannot be known until the year is over. Even if there were withholding on bank interest, taxpayers would still have to file returns to establish the final amount of the tax liability, which usually leaves them with a refund check or a tax bill.

The point of withholding, rather, is to have roughly the right amount of tax paid to the Treasury over the course of the year rather than all at once when the tax return is submitted. This helps with treasury's cash flow, of course, but it also helps the taxpayers' cash flow, because it relieves them of the need to ensure that they're saving enough cash to pay a huge annual tax bill. That in turn helps the treasury's cash flow indirectly, and allows the IRS to save on collection efforts.

Bank interest is generally of such a small magnitude that it doesn't affect the total amount of the tax bill by very much at all. Therefore, any system to require withholding of such interest will have a greater cost than benefit. (Some foreign account holders are in fact subject to withholding on bank interest.)

People whose income tax withholding is not adequate (or is nonexistent) may be required to make estimated tax payments to supplement the withholding. Someone who has so much money in the bank that their interest income is very large will have to make these payments, but such people will be rare.

Actual cases in which estimated tax payments are common include large sources of unearned income (often not subject to withholding), which includes retirement income, and non-employee earned income (that is, someone who is paid as a contractor using form 1099).

  • @DavidSupportsMonica that's in the last paragraph, though it doesn't mention earned income specifically.
    – phoog
    Commented Dec 19, 2019 at 0:14
  • It is. I'll delete my comment, but suggest amending your Answer to say "...tax withholding is not adequate (or absent, as in the case of someone not working for wages...") may be required..." Many people don't work for wages paid by others. Commented Dec 19, 2019 at 0:16
  • @DavidSupportsMonica thanks for the suggestion. Do the edits satisfy your concerns?
    – phoog
    Commented Dec 19, 2019 at 0:23
  • Close. I think you should add mention of those (like retirees...ahem) who don't work. Commented Dec 19, 2019 at 0:29
  • That'll do it. Thanks. Commented Dec 19, 2019 at 0:37

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