Free tools for US company owners
No signup, no email wall — just the quick answers foreign founders keep asking for. Every figure is labeled as of 2026, and every result is an estimate based on published rules, not a determination.
Form 5472 Deadline & Penalty Checker
Find each year's filing deadline, see which years look delinquent, and estimate the potential penalty exposure — including continuation penalties after an IRS notice.
Open the checkerUS Company Cost Calculator (Non-Resident)
Estimate the year-one and ongoing annual cost of a Wyoming, Delaware, or Florida company — state fees, EIN, registered agent, virtual address, and the Amazon plan.
Open the calculatorUS Sales-Tax Nexus Checker (Foreign Sellers)
See where storing inventory creates physical nexus, whether your direct sales cross a state's economic-nexus threshold, and what marketplace facilitator laws already cover — with per-state thresholds as of 2026.
Open the checkerThese tools give you a fast, transparent estimate. When you want the real answer for your situation — the right state, whether you owe US income tax, catch-up filings — talk to a CPA or start with a free compliance check.
Real answers for your company.
A calculator is a starting point. Setting things up right — and fixing what a formation platform left behind — is what we do.