Temporada de Impuestos 2026: Fechas Clave y Qué Preparar

Tax season 2026 is officially underway, and whether you are filing as an individual, a freelancer, or a business owner, preparation is the key to a smooth and stress-free experience. This guide covers everything you need to know about important dates, documents to gather, and steps to take now.

Important Dates for 2026

Mark these deadlines on your calendar to avoid penalties and late fees.

• January 27, 2026: IRS begins accepting e-filed tax returns
• March 15, 2026: Deadline for S Corporation and Partnership returns (Form 1120-S and Form 1065)
• April 15, 2026: Individual tax return deadline (Form 1040) and first quarterly estimated payment
• April 15, 2026: C Corporation tax return deadline (Form 1120)
• June 15, 2026: Second quarterly estimated tax payment due
• September 15, 2026: Extended S Corp and Partnership returns due, third quarterly estimated payment
• October 15, 2026: Extended individual and C Corp returns due

Documents You Will Need

Start gathering these documents now rather than scrambling in April.

For Individuals

• W-2 forms from all employers
• 1099 forms for freelance income, interest, dividends, and retirement distributions
• Records of deductible expenses such as mortgage interest, charitable donations, and medical costs
• Health insurance documentation including Form 1095
• Prior year tax return for reference

For Business Owners

• Profit and loss statement for the full year
• Balance sheet as of December 31
• Bank and credit card statements for all business accounts
• Records of business assets purchased or sold
• Payroll reports if you have employees
• 1099-NEC forms issued to contractors

The most common cause of filing delays is not complexity, it is missing documents. Taking thirty minutes now to organize your paperwork can save hours of stress later.

New for 2026

Each year brings changes to tax law that may affect your return. Stay informed about updated standard deduction amounts, changes to tax bracket thresholds, new energy and clean vehicle credits, and updated contribution limits for retirement accounts.

File Early, File Right

Filing early has several advantages. You receive your refund sooner, you reduce the window for identity theft and fraudulent returns, and you have more time to address any issues that arise. At Kairos Insights, we begin preparing returns as soon as all documents are available. Schedule your tax preparation appointment today.

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