IRS Forms & Reporting · Oct 7, 2026
How the capital loss carryback for corporations works: 3 years back, 5 forward, the no-NOL limit, and whether to file Form 1139 or Form 1120-X.
Tax Planning & Deadlines
2026 Section 179 limits: $2,560,000 maximum, $4,090,000 phase-out and $32,000 SUV cap, with IRS citations and a worked example.
Sep 22, 2026 · 17 min read
Tax Planning & Deadlines
What the QBI deduction is, who qualifies, how to calculate it, and the 2026 thresholds, phase-in ranges, and $400 minimum deduction under the OBBBA.
Sep 2, 2026 · 15 min read
Practice Management
Finding a niche in accounting is how a firm grows up: shed the 80/20 dead weight, specialize, and move to advisory.
Aug 26, 2026 · 8 min read
Practice Management
How to start your own accounting firm: entity, licensing, IRS registrations, tech stack, and first clients, in order.
Aug 26, 2026 · 10 min read
Practice Management
Leaving public accounting to start your own firm? The runway math, the honest risks, and how to know if you're ready to leap.
Aug 14, 2026 · 10 min read
AI Adoption
A prompt engineering playbook for prompting AI for tax research, with weak vs. best prompt comparisons for the tasks you run most.
Aug 5, 2026 · 10 min read
Start researching today or talk to our team about bringing Marble across your firm’s tax workflow.