When and How to File Your 2025 Taxes
A Guide for Individuals and Business Owners
Tax season shows up quickly every year, and most problems happen not because people refuse to file, but because they do not understand when they need to file or what applies to their situation. Filing correctly and on time protects your financial health, avoids penalties, and keeps small problems from turning into expensive ones later.
Here is a simple breakdown of what to expect for the 2025 tax filing season.
Individual Tax Filers
When to file
For most individuals, 2025 tax returns are due:
April 15, 2026
This applies to W2 employees, retirees, and individuals with investment or side income.
If you need additional time, you can file an extension, which moves the filing deadline to October 15, 2026. However, an extension only extends the time to file, not the time to pay. Any tax owed is still due by April 15 to avoid penalties and interest.
What you need before filing
Most delays happen because documents arrive late or income is missed. Before filing, make sure you have:
W2s from employers
1099 forms for contract or freelance income
1099 INT or DIV for interest and dividends
Mortgage interest statements
Health insurance forms if applicable
Documentation for deductions or credits
If you had multiple income sources or side work during the year, accurate reporting is critical. The IRS receives copies of these forms.
Self Employed Individuals and Single Member LLCs
If you operate as a sole proprietor or single member LLC, your business income is reported on your personal return using Schedule C.
Important deadlines
April 15, 2026 for filing and payment
Quarterly estimated payments may apply if taxes are owed
What matters most
Tracking income and expenses throughout the year
Separating business and personal transactions
Recording mileage, supplies, and subcontractor payments correctly
Poor bookkeeping often results in overpaying taxes or missing deductions.
Partnerships and Multi Member LLCs
Partnerships and multi member LLCs file an informational return.
Filing deadline
March 15, 2026
The business itself usually does not pay income tax. Instead, profits or losses pass through to the owners on Schedule K 1 forms, which are then reported on individual returns.
If this return is late, penalties can apply even if no tax is owed.
S Corporations
S Corporations also file informational returns.
Filing deadline
March 15, 2026
Owners receive a Schedule K 1 showing their share of income. Reasonable salary requirements and payroll reporting must also be completed before filing.
Late or incorrect payroll reporting is one of the most common S Corp issues we see.
C Corporations
C Corporations file their own tax return and pay corporate income tax.
Filing deadline
April 15, 2026 for calendar year corporations
Unlike pass through entities, the corporation pays tax separately from the owners.
Extensions and Estimated Payments
Extensions are common and not a problem when used correctly. They are meant to allow more time for accurate filing, not to delay payment.
If you expect to owe taxes, making an estimated payment by April 15 helps avoid penalties and interest.
Why filing early matters
Early filing allows time to correct errors, plan payments, and avoid last minute stress. It also reduces the risk of identity theft related to tax filings.
For business owners, early filing also provides clearer financial data for planning the rest of the year.
At Eldridge Bookkeeping Solutions, our goal is simple.
Bookkeeping that makes sense so tax season does too.
If you are unsure what applies to your situation or want your books cleaned up before filing, we are happy to help you get prepared.