TL;DR: If you filed for a federal tax extension this spring and still haven’t filed your 2025 return, October 15, 2026 is generally the filing deadline. An extension gave you more time to file, not more time to pay. If your farm books are behind, start getting them updated now so your tax professional has accurate numbers to work with.
The October 15 Deadline is About Filing
If you requested an extension by the April filing deadline, the IRS generally gives taxpayers until October 15 to file. This is separate from quarterly estimated tax payment deadlines. If your farm is organized as a calendar-year S corporation and you filed an extension, the federal filing deadline is generally September 15. Nonprofit filing deadlines depend on the organization’s tax year, and some extended nonprofit returns are also due September 15, so check the deadline that applies to your organization.
An extension gives you more time to file your return, not more time to pay taxes that were due by the original deadline. If you still owe tax from the spring, interest and a failure-to-pay penalty may apply.
What Happens If You Miss the Deadline?
If you don’t file by the extended deadline, a failure-to-file penalty may apply. The IRS generally charges 5% of unpaid tax for each month or part of a month a return is late, up to 25%. Interest may also continue on unpaid balances.
Some taxpayers may qualify for additional time, including certain taxpayers affected by federally declared disasters or serving in qualifying combat zones. Check current IRS guidance if that applies to you.
What Farmers, Ranchers and Agribusinesses Should Pull Together Now
If your return isn’t filed yet, start with:
- Final income and expense totals for the tax year
- Reconciled bank and credit card statements
- Records for equipment, vehicles, buildings, and other depreciable farm assets
- Documentation for farm expenses such as feed, seed, fertilizer, fuel, repairs, and supplies
- Schedule F details for farmers who report farm income and expenses there
- Records for sales or purchases of livestock, equipment, land, or other significant assets
- Anything else your tax professional has requested
If your books have gaps, duplicate transactions, uncategorized expenses, or missing reconciliations, it’s important to address those now. Your tax professional needs reliable numbers to prepare an accurate return.
Get Your Books Cleaned Up, Then File
We suggest that you clean up your books before filing taxes. Good Agriculture helps farmers keep their books and finances in order throughout the year, with tax filing also available to our bookkeeping farmers.
Whether you’re catching up on transactions or managing multiple enterprises, accounts, loans, and assets, having accurate books gives you the financial information you need to file and make better decisions for your operation.
If your books are behind, reach out before the October 15 deadline so there’s time to get your records in order.
TLDR means “too long; didn’t read.” It’s a quick summary of the most important information in an article.