These are the main federal and California deadlines in 2027 for your 2026 tax return, and for estimated tax payments. When a deadline falls on a weekend or holiday, it moves to the next business day; the dates below already include that. Not sure which apply to you? Call Robin at (818) 378-1224.
For individuals and families
- February 1, 2027: employers must send W-2 forms, and businesses must send most 1099 forms, by this date. If one is missing in mid-February, ask the employer or payer.
- April 15, 2027: your 2026 federal return (Form 1040) and California return (Form 540) are due, and so is any tax you owe.
- October 15, 2027: the last day to file if you got an extension.
An extension gives you more time to file, not more time to pay. If you will owe tax, pay what you expect to owe by April 15 to avoid interest and penalties. Robin can file the extension for you.
For self-employed people and anyone paying estimated tax
If you earn money that has no tax taken out, such as 1099, gig, rental or investment income, you may need to pay tax during the year. Read more about self-employed and 1099 taxes.
- January 15, 2027: 4th estimated payment for 2026 (federal and California)
- April 15, 2027: 1st estimated payment for 2027 (federal; California 30%)
- June 15, 2027: 2nd estimated payment for 2027 (federal; California 40%)
- September 15, 2027: 3rd estimated payment for 2027 (federal only; California has no payment in September)
- January 2028: 4th estimated payment for 2027 (federal; California 30%)
For small businesses
- February 1, 2027: send 1099-NEC forms to the contractors you paid during 2026, and file them with the IRS. Robin can tell you which payments need a form.
- March 15, 2027: partnership (Form 1065) and S corporation (Form 1120-S) returns are due, for businesses whose year ends on December 31.
- April 15, 2027: C corporation returns (Form 1120) are due, and single-member LLCs report on the owner’s personal return.
- September 15, 2027: the extended deadline for partnerships and S corporations.
- October 15, 2027: the extended deadline for C corporations and personal returns.
Read more about business tax returns.
Missed a deadline?
File as soon as you can: the penalties grow every month a return is late, and you may be owed a refund you have not claimed. Read more about late and amended tax returns.
Good to know
The IRS and California sometimes move deadlines for people in areas hit by a disaster, such as wildfires. If that happens in Los Angeles County, Robin will tell you which dates have changed. These dates were checked in November 2026.
Get your return done before the rush
The earlier you start, the easier it is. See what to bring to your tax appointment, then Call (818) 378-1224, or send a message and Robin will get back to you.
