Which form is sent by banks to inform you about the interest you have earned?

The form that is sent by banks to inform you about the interest you have earned is the 1099-INT. This particular form is specifically designed to report interest income to taxpayers and the IRS. When you earn more than $10 in interest from a financial institution, they are required to send you a 1099-INT form.

The information on this form is important for tax reporting purposes, as interest income is taxable and needs to be included in your annual tax return. The 1099-INT details the amount of interest that you earned during the tax year, helping you accurately calculate your total income when filing taxes.

The other forms mentioned serve different purposes. For example, the W-2 is used by employers to report wages paid to employees and the taxes withheld. The W-4 is a form employees fill out to indicate their tax situation to their employer, which helps determine the amount of federal income tax to withhold from their paycheck. While the 1099 form is related to various types of income reporting, the specific 1099-INT is dedicated solely to interest income, making it the correct choice in this context.