Santa Monica Accounting
Tax & Business Resources
Deadlines, refund trackers, payment links and the IRS and California forms our clients ask for most. All links go to official government sites.
Upcoming federal tax deadlines
- Q4 estimated tax — calendar-year corporations
- Q4 2026 estimated tax — individuals (Form 1040-ES)
- W-2s and 1099-NEC to workers and the IRS; Q4 Form 941
- Partnership (1065) and S corporation (1120-S) returns, or extension (Form 7004)
- Individual (1040) and C corporation (1120) returns, or extension (Form 4868 / 7004); Q1 2027 estimated tax
- Q2 2027 estimated tax
- Q3 2027 estimated tax; extended 1065 and 1120-S returns
- Extended individual (1040) and C corporation (1120) returns
- Q4 estimated tax — calendar-year corporations
Federal dates for calendar-year filers. The IRS can postpone deadlines for disaster areas; confirm on the IRS tax calendar.
Track your refund
IRS: Where’s My Refund?
Check your federal refund status. Check federal refund →
IRS: amended return
Track a Form 1040-X amended return. Check amended return →
California FTB refund
Check your California state refund. Check CA refund →
Make a payment
IRS Direct Pay
Pay federal tax from a bank account, free. IRS Direct Pay →
IRS payment options
Card, payment plans and other ways to pay. All IRS payment options →
EFTPS
Federal payroll and business tax deposits. EFTPS →
IRS online account
See balances, payments and notices. IRS online account →
California FTB payments
Pay California income or franchise tax. Pay FTB →
CDTFA (sales tax)
File and pay California sales and use tax. CDTFA →
Common IRS forms
- Form W-9: request a contractor’s taxpayer ID
- Form W-4: employee federal withholding
- Form 1040-ES: estimated tax for individuals
- Form 4868: individual filing extension
- Form 7004: business filing extension
- Form 2553: elect S corporation status
- Form 3115: change accounting method
- Get an EIN: apply online, free
- All IRS forms and instructions
California business links
- California Secretary of State bizfile: LLC and corporation filings, Statements of Information
- EDD: California payroll tax accounts and filings
- Franchise Tax Board: state income and franchise tax
Free IRS tools
- Tax Withholding Estimator: check your W-4 withholding
- IRS Tax Calendar for Businesses
- Publication 4557: safeguarding taxpayer data
Santa Monica Accounting is not affiliated with the IRS or any government agency. Read our disclaimer.
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