March 2026 Tax Landscape Overview Dear Valued Customer, It's that time of year again and filing season for 2025 tax year returns is active, with the April 15, 2026 deadline approaching. The One Big Beautiful Bill Act (OBBBA, signed July 4, 2025) drives major changes effective for 2025 returns. - Filing Deadline: April 15, 2026 for most individual and calendar-year business returns. Extensions to October 15 via Form 4868. - Standard Deduction (2025 tax year): $15,750 (sin