Tax Season 2026-27: Start Date, Deadlines & What's New

Your complete guide to the 2026-27 tax season: when the IRS starts accepting returns, key filing deadlines, projected 2027 tax brackets, what's changing, refund timelines, and how to prepare.

When Does Tax Season 2027 Start?

The IRS has not yet announced the official start date for the 2027 filing season. Based on historical patterns, the IRS typically begins accepting federal income tax returns in the last week of January. The 2026 filing season started on January 26, 2026, and the 2025 season started on January 27, 2025. The 2027 season is projected to start around January 27, 2027.

The IRS announces the official start date in October of the prior year, along with the new tax year's standard deduction, tax brackets, and other inflation-adjusted figures. Once announced, the IRS begins accepting returns on that date, and tax software companies and tax preparers can begin submitting returns.

It is worth noting that the IRS has been gradually moving the start date earlier in recent years as electronic filing has become the dominant method. The vast majority of returns are now filed electronically, and the IRS encourages e-filing as the fastest and most accurate way to submit your return.

Tax software companies typically begin accepting returns a few weeks before the official IRS start date. They hold the returns and transmit them to the IRS once the agency begins processing. This means you can prepare your return early and have it ready to go as soon as the IRS opens.

Tax Season 2026-27 Key Dates and Deadlines

The tax season follows a predictable calendar of important dates. Missing a deadline can result in penalties and interest, so it is essential to mark these dates on your calendar. The table below shows the key dates for the 2026-27 tax season.

All 2027 dates are projected based on the typical IRS schedule. The IRS may adjust dates if they fall on weekends or holidays. For example, if April 15 falls on a weekend or Emancipation Day, the deadline shifts to the next business day.

2027 Tax Brackets and Standard Deduction (Projected)

The IRS has not yet released the official 2027 tax brackets or standard deduction. These figures are announced in October 2026 based on inflation adjustments. The table below shows the confirmed 2026 figures alongside projected 2027 figures based on typical inflation adjustments. Treat all 2027 numbers as estimates until the IRS publishes the official amounts.

The standard deduction for 2026 is $15,000 for single filers, $30,000 for married couples filing jointly, and $22,500 for heads of household. The 2027 standard deduction is projected to increase to approximately $15,500 for single filers, $31,000 for married couples, and $23,000 for heads of household, though these are estimates until the IRS announces the official figures.

For the most up-to-date 2027 figures, check the IRS website in October 2026 or use our Tax Brackets page, which will be updated as soon as the official numbers are released.

What's New for Tax Year 2027

While the official 2027 tax changes have not yet been announced, several trends and proposals are worth watching. The IRS typically adjusts tax provisions for inflation each year, and Congress may enact new legislation that affects the 2027 tax year.

Inflation adjustments: The standard deduction, tax brackets, retirement contribution limits, and estate tax exemption are all adjusted annually for inflation. These adjustments are automatic and do not require new legislation. The 2027 adjustments will be announced in October 2026.

Retirement contribution limits: The 401(k) contribution limit for 2026 is $24,500, and the IRA limit is $7,500. These limits are expected to increase for 2027, though the exact amounts will not be known until the IRS announces them. Workers aged 50 and older can make additional catch-up contributions.

Potential legislative changes: Congress may pass new tax legislation that affects the 2027 tax year. Any changes to tax rates, deductions, or credits would need to be signed into law before taking effect. Monitor official IRS and Treasury Department announcements for the latest information.

IRS modernization: The IRS has been investing in modernizing its systems, including expanding online tools and improving the taxpayer experience. The 2027 filing season may see additional digital services and improvements to the IRS online account system.

How to File Your 2026 Taxes in 2027

Filing your 2026 federal income tax return in 2027 follows the same general process as any other year. You will need to gather your income documents, choose a filing method, and submit your return by the April 15, 2027 deadline.

Gather your documents: Collect all W-2 forms from employers, 1099 forms for freelance income, interest and dividend statements, mortgage interest statements, and any other income or deduction records. Most forms should arrive by February 17, 2027.

Choose a filing method: You can file electronically using tax software, through a tax professional, or by mailing a paper return. The IRS strongly encourages e-filing, which is faster, more accurate, and results in quicker refunds. Free File options are available for eligible taxpayers through the IRS website.

File by the deadline: The filing deadline is April 15, 2027. If you cannot file by that date, you can request an extension using Form 4868, which gives you until October 15, 2027 to file. Remember that an extension to file is not an extension to pay — you must estimate and pay any tax owed by April 15 to avoid penalties and interest.

Track your refund: After filing, you can track your refund status using the IRS "Where's My Refund?" tool. Most refunds are issued within 21 days of e-filing, though some may take longer if additional review is required.

How to Prepare for Tax Season

The weeks before tax season opens are the best time to get organized. A little preparation can save you hours of stress in February and March. Start by gathering your documents, reviewing your prior year return, and making a list of any life changes that affect your taxes.

Review your prior year return: Your 2025 tax return is a useful reference for your 2026 return. It shows your income sources, deductions, and credits, and helps you identify what will change. If you had a major life event in 2026 — marriage, divorce, a new child, a new home, a job change — make a note of it, as each can affect your tax situation.

Organize your documents: Create a folder (physical or digital) for your tax documents. As W-2s, 1099s, and other forms arrive in January and February, file them immediately. Having everything in one place when you sit down to file saves time and reduces the chance of missing a form.

Check your withholding: If you owed a large amount or received a large refund last year, consider adjusting your withholding by submitting a new W-4 to your employer. The goal is to have your withholding closely match your actual tax liability — not too much, not too little. Use the IRS Tax Withholding Estimator to find the right amount.

Choose your filing method: Decide in advance whether you will use tax software, hire a tax professional, or file on your own. If you plan to use free file options, check eligibility requirements early. If you want a tax professional, schedule an appointment well in advance — the best preparers fill up quickly.

Tax Refund Timeline for 2027

The IRS issues most refunds within 21 days of accepting an electronically filed return. Paper returns take significantly longer — typically six to eight weeks. The timeline below shows what to expect for the 2027 filing season.

Certain credits, such as the Earned Income Tax Credit (EITC) and the Additional Child Tax Credit (ACTC), are subject to a mandatory hold until mid-February. The IRS cannot issue refunds containing these credits before February 15, even if the return is filed in January. This is a fraud prevention measure required by law.

To check your refund status, use the IRS "Where's My Refund?" tool at irs.gov/refunds. You will need your Social Security number, filing status, and the exact refund amount from your return.

Common Tax Season Mistakes to Avoid

Every tax season, millions of taxpayers make errors that delay refunds or trigger IRS notices. Here are the most common mistakes and how to avoid them.

Missing the deadline: The most obvious mistake is simply not filing by April 15. If you cannot file on time, request an extension by filing Form 4868. This gives you until October 15 to file, but you must still pay any estimated tax owed by April 15.

Incorrect or missing information: Double-check your name, Social Security number, and bank account numbers. A typo in your bank account number can delay your refund by weeks. Verify that your name matches exactly what appears on your Social Security card.

Forgetting income: Many taxpayers forget to report side income, freelance earnings, or gig economy income. If you received a 1099 form, the IRS has a copy too. Failing to report income is one of the most common triggers for IRS notices.

Math errors: While tax software handles the math, paper filers should double-check all calculations. Simple arithmetic mistakes can delay processing and trigger correspondence from the IRS.

Missing deductions or credits: Taxpayers often overlook deductions and credits they qualify for, such as the Saver's Credit, education credits, or the Child and Dependent Care Credit. Review the full list of available credits before filing.

Filing under the wrong status: Your filing status affects your tax rate and standard deduction. Make sure you are using the correct status — single, married filing jointly, married filing separately, head of household, or qualifying surviving spouse.

Tax Scams to Watch For During Tax Season

Tax season is prime time for scammers. The IRS sees a surge in phishing emails, fake text messages, and impersonation scams every year. Knowing the warning signs can protect you from identity theft and financial loss.

The IRS never initiates contact by email, text, or social media. If you receive an email claiming to be from the IRS, it is a scam. The IRS always initiates contact through official postal mail. Do not click links or download attachments in unsolicited emails.

The IRS never demands immediate payment by gift card, wire transfer, or cryptocurrency. If someone claiming to be an IRS agent demands payment through these methods, it is a scam. The IRS does not accept payment by gift card or cryptocurrency.

Be wary of threats and urgency. Scammers often threaten arrest, deportation, or license revocation to pressure victims into paying. The IRS does not make threats. If you owe tax, you will receive a series of notices by mail before any enforcement action.

Verify before you pay. If you are unsure whether a communication is legitimate, contact the IRS directly at 1-800-829-1040. Do not use phone numbers provided in suspicious emails or text messages.

Protect your identity. Use strong, unique passwords for tax software accounts and IRS online accounts. Enable two-factor authentication wherever possible. Monitor your credit reports for signs of identity theft.