Quick Summary:
- Automatic 6-Month Extension: Anyone can request an automatic 6-month extension to file their federal tax return, moving your filing deadline from April 15 to October 15.
- Extension to File, Not to Pay: Filing Form 4868 gives you more time to submit paperwork, but any estimated tax balance owed must still be paid by April 15 to avoid interest and penalties.
- Missouri State Rules: Missouri grants an automatic extension if you do not owe state tax or if you file a federal extension, but payments must still meet the April deadline.
- Avoid Late-Filing Penalties: Filing an extension eliminates the harsh 5%-per-month Failure-to-File penalty, even if you cannot pay the full balance right away.
- Get Professional Guidance: Don’t let tax deadlines stress you out. Contact STL Tax or call our St. Louis office on Gravois Road to handle your extension and tax preparation.
Life happens, documents get delayed, and tax season moves fast. If mid-April is approaching and you aren’t ready to submit your tax return, you might be asking: Can I get an extension to file my tax return?
The short answer is yes. The IRS and the state of Missouri allow virtually any taxpayer to request extra time to get their paperwork in order. However, understanding how tax extensions actually work—and avoiding the single biggest mistake taxpayers make—is crucial to protecting your wallet.
How an IRS Tax Extension Works
To request extra time from the federal government, individuals file IRS Form 4868 (Application for Automatic Extension of Time to File U.S. Individual Income Tax Return).
Submitting this form moves your tax filing deadline from April 15 to October 15.
Important Rules to Remember:
- No Explanation Needed: You do not need to give the IRS a reason for requesting an extension. Approval is automatic as long as the form is submitted on or before April 15.
- Covers Small Businesses Too: Sole proprietors and single-member LLCs filing Schedule C use Form 4868. S-Corporations and Partnerships must file Form 7004 by March 15 for a 6-month extension.
The Big Catch: An Extension to File Is NOT an Extension to Pay
The most common mistake taxpayers in Greater St. Louis make is assuming that a tax extension gives them six extra months to pay their tax bill.
An extension only delays your paperwork, not your payment obligations.
The IRS requires you to estimate your tax liability and pay any balance owed by the original April 15 deadline. If you do not pay your estimated balance by April 15:
- Interest Accrues: The IRS charges interest on any unpaid tax balance starting April 16.
- Failure-to-Pay Penalties Apply: A penalty of 0.5% per month (up to 25%) is added to your unpaid balance.
Why You Should Still File an Extension If You Can’t Pay
If you owe money but cannot afford to pay right now, file the extension anyway.
The IRS Failure-to-File penalty is 5% per month, ten times higher than the 0.5% Failure-to-Pay penalty. Filing Form 4868 eliminates the Failure-to-File penalty entirely.
How Missouri State Tax Extensions Work
If you live or work in Missouri, you also have state tax filing obligations with the Missouri Department of Revenue.
Missouri Extension Rules:
- If You Do Not Owe State Tax: Missouri automatically grants you an extension to file if you expect a refund or zero balance.
- If You Granted a Federal Extension: Missouri automatically honors your federal Form 4868 extension. You do not need to submit a separate state form unless you are paying state taxes electronically.
- If You Owe Missouri Tax: You must estimate your state liability and submit payment by April 15 using Form MO-60 (Application for Extension of Time to File).
Note for St. Louis City Residents: If you live or work in St. Louis City, remember that the 1% St. Louis City Earnings Tax administered by the St. Louis Collector of Revenue has separate filing rules that align with state deadlines.
Real-World Case Study: A St. Louis Business Owner’s Extension
Meet David: David owns a residential remodeling business in Kirkwood. In early April, David was still waiting on 1099 forms from two commercial clients and hadn’t finalized his year-end bookkeeping. Realizing he could not complete an accurate return by April 15, David called STL Tax.
- The Strategy: STL Tax reviewed David’s income records and calculated an estimated federal tax obligation of $4,000 and a Missouri tax obligation of $600.
- The Action: STL Tax electronically filed Form 4868 and processed an estimated payment of $4,000 to the IRS and $600 to Missouri on April 14.
- The Result: David safely submitted his finalized return in August. Because his tax estimate was accurate, he paid zero dollars in late-filing or late-payment penalties.
Reasons You Should File a Tax Extension
Filing an extension is not a sign of financial trouble; in fact, it is often the smartest tax strategy available. You should consider an extension if:
- Missing Tax Documents: You are waiting on corrected W-2s, late 1099s, K-1 schedules from partnerships, or brokerage statements.
- Major Life Events: You experienced a major life disruption during tax season (illness, house move, family emergency).
- Complex Business Records: You need extra time to organize business receipts, calculate home office expenses, or complete QuickBooks bookkeeping cleanups.
- Tax Planning Opportunities: Extra time allows your CPA to thoroughly review potential deductions and strategies without rushing.
Get Help Filing Your Extension in St. Louis
Don’t let tax deadlines cause unnecessary stress or lead to rushed errors on your return. Working with an experienced local CPA ensures your extension is filed correctly, your payments are estimated accurately, and your return is optimized for maximum savings.
Whether you need individual income tax filing or full small business tax services, the team at STL Tax is here to guide you.
Call our St. Louis office today at (314) 645-1614 or schedule your tax consultation online.
