
Webinar Recap: Tax Moves to Make Before September 15th (September 3, 2026)
The September 15th tax deadline covers two separate obligations for solopreneurs: the extended deadline for 2025 S Corp…
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Marissa Achanzar spent nearly a decade in public accounting at a top 10 accounting firm, supporting businesses of all sizes and complexity as a senior tax accountant, before joining Collective — where five years and thousands of one-on-one conversations with self-employed business owners turned her into a translator between technical tax concepts and real solopreneur questions. She's a speaker at both public and partnership webinars and summits for Collective, including the 10x Your Freelancing Summit.

Collective Webinars |
The September 15th tax deadline covers two separate obligations for solopreneurs: the extended deadline for 2025 S Corp returns, and the third-quarter estimated tax payment for…

The September 15th tax deadline covers two separate obligations for solopreneurs: the extended deadline for 2025 S Corp…
Sep 3, 2026 · 9 min read
You set out to do your craft, not to run payroll and chase tax deadlines. Once you elect…
Aug 25, 2026 · 7 min read
During a live session on August 20, 2026, Collective’s Marissa Achanzar broke down how solopreneurs can still lock…
Aug 20, 2026 · 9 min read
An S Corp starts as a legal entity, not a company you build from scratch. If you’ve been…
Aug 19, 2026 · 10 min read
The S Corp election gets pitched as a tax-savings move. What doesn’t get pitched: what it costs to…
Aug 11, 2026 · 5 min read
During a live session on April 7, 2026, Collective’s Marissa Achanzar broke down the April 15 tax deadline…
Aug 11, 2026 · 9 min read
During a live session on June 23, 2026, Collective’s Marissa Achanzar walked through S Corp late election relief,…
Aug 11, 2026 · 13 min read
Running a business alone means wearing every hat, all the time. The invoicing hat, the marketing hat, the…
Aug 10, 2026 · 4 min read
Collective hosted a live session breaking down the difference between staying a single-member LLC and adding an S…
Aug 10, 2026 · 11 min read
Recap of Collective’s July 30, 2026 webinar. Hosted by Marissa Achanzar, Strategic Content & Education Lead at Collective,…
Aug 5, 2026 · 9 min read
If you’re running your business under an S Corp election, mid-year is a worthwhile moment to make sure…
Jun 11, 2026 · 5 min read
Most people who start working for themselves don’t sit down and choose a business structure. They start taking…
Jun 11, 2026 · 6 min read