Free tools · no signup
Work out the number before you decide anything.
Penalty exposure, quarterly estimates, S-corp savings, bookkeeping fees, state LLC costs, deadlines and whether you have to file at all. Each tool uses 2026 figures, explains its assumptions, and ends with what to do about the result.
Free calculators and checkers
Built by our team of Certified Accountants, CPAs and Enrolled Agents with 2026 figures. No signup, no email gate; the number is yours.
- Late filing penalty calculator
Two different penalties, two different maths. Partnership and S-corp returns are penalised per owner, per month, even wh…
- Form 5472 penalty calculator
A foreign-owned single-member LLC files Form 5472 with a pro forma Form 1120 every year, even with no income. The penalt…
- Quarterly estimated tax calculator
If you take profit from an LLC or work for yourself, nobody withholds tax for you. The IRS expects four payments through…
- S-corp savings calculator
An S-corp election lets you pay yourself a salary and take the rest as distributions that escape self-employment tax. It…
- Bookkeeping cost estimator
Bookkeeping fees follow volume, not revenue. Transactions, bank and card accounts, payroll and sales tax registrations a…
- LLC annual cost by state
The formation fee is the cheapest part of owning an LLC. The annual report, franchise tax, registered agent and federal …
- Tax deadline finder
A single-member LLC, an S-corp and a foreign-owned LLC each run on a different calendar. Choose yours and see only the d…
- US filing requirement checker
Most penalties come from forms nobody knew existed. Six questions, and this lists the federal filings your entity and ow…
When the number is bad
Ready for a fixed quote?
Two sentences from you. A written price within 8 hours. No obligation, no long-term contract.
Get my quote Call +1 (302) 601-0115 Book a free 30-minute call WhatsApp