by Larson Gross | Feb 9, 2026
INSIGHTS Washington’s Proposed MillionaireIncome Tax by Kevin DeYoung, CPA/AEP ARTICLE | February 6, 2026 Executive Summary Washington lawmakers are considering a narrowly targeted tax on high earners, often referred to as a “millionaire’s income tax.” While...
by Larson Gross | Jan 1, 2026
INSIGHTS U.S. Business Tax Calendar Due Date Return/Period Covered File With Extension Due Date Jan. 15 941/943 payroll tax deposit (monthly depositors)* IRS 1120 U.S. Corporation return for fiscal years ending Sept. 30 IRS June 15 990 Exempt Organizations return...
by Larson Gross | Jan 1, 2026
INSIGHTS U.S. Individual Tax Calendar Note: If any date lands on a weekend or holiday, the filing deadline is moved to the following business day. Due Date Return/Period Covered File With Due Date if Extension Filed Jan. 15 1040-ES Individual 4th estimated tax...
by Larson Gross | Dec 18, 2025
INSIGHTS Washington DOR: Immediate Tax Relief & Business Support for Flood Victims by Larson Gross ARTICLE | Dec 17, 2025 The Washington State Department of Revenue (DOR) is actively offering disaster relief provisions to help flood-impacted businesses manage...
by Larson Gross | Nov 24, 2025
INSIGHTS 2025 Year-End Tax Tips for Individuals & Families by Teresa Durbin, CPA, Larson Gross As we approach the end of 2025, taxpayers are navigating a familiar—but still shifting—tax environment. Many of the Tax Cuts and Jobs Act (TCJA) provisions were...
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