Anyone who opened a new checking account to grab a $200 or $300 cash bonus this year should expect a tax form in the mail. The IRS treats those payments as taxable interest, and financial institutions are required to report amounts of $10 or more on Form 1099-INT, whether the customer thinks of the money as a promotional perk or not. With banks competing aggressively for deposits during the 2026 filing cycle, the gap between what people believe they received and what they actually owe is widening fast.
How a $200 checking bonus becomes taxable interest
The legal chain is short and direct. Under federal tax law, interest on bank deposits counts as gross income. Treasury regulations define interest broadly enough to sweep in any payment a bank credits to a depositor’s account, including promotional bonuses tied to opening or funding that account. The IRS reinforces this in its own guidance: noncash gifts or services received for making deposits or opening an account “may be reported as interest” on Publication 550 and may need to appear on a tax return.
The reporting trigger is low. Financial institutions must file a 1099-INT for any amount of $10 or more paid or credited to a person’s account, according to the official instructions for Forms 1099-INT and 1099-OID, revised in January 2024. That threshold applies “whether or not designated as interest.” A customer who earns $3 in regular savings interest and $200 from a signup offer will see both amounts combined on a single form. The payer sends one copy to the account holder and files another with the IRS, creating a matching record that the agency’s automated systems can flag if the income goes unreported.
The statutory backbone sits in Section 6049 of the Internal Revenue Code, which requires information returns for interest payments and remains current through June 2026. Banks have no discretion to skip the filing. Once the bonus hits the account, the reporting obligation follows automatically. For taxpayers, that means the income is visible to the IRS whether or not they remember signing up for the promotion in the first place.
Why digital bank bonuses create a bigger surprise
The mismatch between marketing and tax reality hits hardest when customers chase multiple offers. A person who opens accounts at three different institutions to collect three separate bonuses could receive three separate 1099-INT forms the following January, each one adding to adjusted gross income. Because the $10 reporting floor is so low, even modest bonuses generate paperwork. Traditional banks have issued these forms for decades, but the volume of promotional offers from online-only banks and fintech platforms has made the issue more visible to a broader set of consumers.
Automated compliance systems at newer financial institutions tend to apply the $10 threshold strictly and issue forms quickly, sometimes before customers realize the bonus has posted. The result is a tax bill that arrives months after the promotion, catching people off guard during filing season. A $300 bonus taxed at a 22% marginal federal rate, for example, costs the recipient $66 in additional federal income tax, a figure that does not account for any state tax liability. For a household stacking several offers, the total tax hit can climb into the hundreds of dollars once all bonuses and regular interest are added together.
Marketing materials rarely spell this out in detail. Disclosures often mention that customers are “responsible for any applicable taxes,” but they may not explain that the bank will report the payment directly to the IRS or that the bonus will appear indistinguishably alongside ordinary interest. That disconnect can foster the impression that the money is more like a rebate or coupon than taxable income, even though the underlying rules treat it as interest once it lands in a deposit account.
Open questions about enforcement and next steps
No publicly available IRS data breaks out how many 1099-INT forms are generated specifically by account-opening bonuses, or how much revenue those bonuses add to the federal tax base each year. The agency aggregates interest reporting across savings accounts, certificates of deposit, and other deposit products, making it difficult for outside analysts to isolate promotional activity from ordinary yield. That lack of granularity leaves consumers and policymakers guessing about the scale of the phenomenon, even as anecdotal reports suggest that bonus-driven filings are rising alongside aggressive online marketing.
What is clear is the enforcement framework. When a bank files a 1099-INT, the IRS’s matching programs compare the reported amount with what the taxpayer lists on their return. If the interest line on the return is lower than the total reported by payers, the system can generate an automated notice proposing additional tax, plus interest and possible penalties. For someone who has forgotten about a bonus or assumed it was tax-free, the first indication of a problem may be a letter arriving a year or more after the promotion was paid.
Tax professionals say the practical response is straightforward, even if the rules feel counterintuitive. Anyone pursuing multiple bank bonuses should track them as taxable income, keep copies of all 1099-INT forms, and confirm that the total interest reported matches what appears on their return. Consumers considering a new offer may also want to weigh the after-tax value of the bonus against any fees or balance requirements. The promotions can still be worthwhile, but only if customers factor in the tax consequences that come with the extra cash.
Warren Cohen is a finance writer based in Phoenix, Arizona, covering personal finance topics including credit, banking, and beginner investing. He earned his degree in business administration from Arizona State University and began his career working in consumer finance, where he gained direct experience with lending and credit systems. He now writes for personal finance websites and fintech platforms, focusing on clear, practical content that helps readers make informed financial decisions.
