From the IRS:

The Treasury Department and Internal Revenue Service announced today that the federal income tax filing due date for individuals for the 2020 tax year will be automatically extended from April 15, 2021, to May 17, 2021. The IRS will be providing formal guidance in the coming days.

Individual taxpayers can also postpone federal income tax payments for the 2020 tax year due on April 15, 2021, to May 17, 2021, without penalties and interest, regardless of the amount owed. This postponement applies to individual taxpayers, including individuals who pay self-employment tax. Penalties, interest and additions to tax will begin to accrue on any remaining unpaid balances as of May 17, 2021. Individual taxpayers will automatically avoid interest and penalties on the taxes paid by May 17.

Individual taxpayers do not need to file any forms or call the IRS to qualify for this automatic federal tax filing and payment relief. Individual taxpayers who need additional time to file beyond the May 17 deadline can request a filing extension until Oct. 15 by filing Form 4868 through their tax professional, tax software or using the Free File link on IRS.gov. Filing Form 4868 gives taxpayers until Oct. 15 to file their 2020 tax return but does not grant an extension of time to pay taxes due. Taxpayers should pay their federal income tax due by May 17, 2021, to avoid interest and penalties.

This relief does not apply to estimated tax payments that are due on April 15, 2021. These payments are still due on April 15. Taxes must be paid as taxpayers earn or receive income during the year, either through withholding or estimated tax payments. In general, estimated tax payments are made quarterly to the IRS by people whose income isn’t subject to income tax withholding, including self-employment income, interest, dividends, alimony or rental income. Most taxpayers automatically have their taxes withheld from their paychecks and submitted to the IRS by their employer.

State tax returns in general

The federal tax filing deadline postponement to May 17, 2021, only applies to individual federal income returns and tax (including tax on self-employment income) payments otherwise due April 15, 2021, not state tax payments or deposits or payments of any other type of federal tax. Taxpayers also will need to file income tax returns in 42 states plus the District of Columbia. State filing and payment deadlines vary and are not always the same as the federal filing deadline. The IRS urges taxpayers to check with their state tax agencies for those details.

North Carolina

The North Carolina Department of Revenue (NCDOR) announced on March 18 that it will extend the April 15 tax filing and payment deadline to May 17, 2021, for individual income tax to mirror the announced deadline change from the Internal Revenue Service.  With the move to May 17, the NCDOR will not charge penalties for those filing and paying their taxes after April 15, 2021, as long as they file and pay their tax before May 17, 2021.

Unless state law is changed, tax payments received after April 15 will be charged interest, accruing from April 15 until the date of payment. The deadline extension only applies to individual income tax returns due April 15, 2021. It does not apply to trust taxes such as sales and use or withholding taxes or estimated tax payments due April 15, 2021.