Resources
Plain-language explanations of the tax questions small business owners and self-employed professionals actually ask — deadlines, notices, entity choices, and multi-state rules. Written by Fahadun Nabi, founder of Blue Sage Tax and Accounting Inc..
When Are Estimated Taxes Due for 2026
April 15, June 15, September 15, and January 15 of the following year are the standard federal estimated tax due dates. For 2026, the first installment is due…
28 Sep 2026How to Avoid Underpayment Penalty: A 2026 Guide
You sell a building interest in November, exercise stock options in December, or finally receive the K-1 that was “coming soon” all year. Then, a few months later,…
3 May 2026Your Guide to the Quarterly Estimated Tax Calculator
If you're running your own business, working as a freelancer, or earning significant investment income, you know the IRS expects its cut throughout the year, not just on…
11 Dec 2025Have a question we have not written about?
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