Free Tax Tools
Interactive calculators, assessments, and guides for foreign LLC owners, self-employed workers, and deadline-driven filers — all free, no account needed.
Assessment Tools
AI Tax AssistantFree AI
Free AI Q&A for foreign-owned LLC questions, with IRS-source citations
AI Tax Return DrafterAI Beta
Paste bank statements, AI drafts your Form 1120 + 5472
Catchup PlannerAI Beta
Missed years? Plan + penalty + reasonable-cause letter
AI Form ReviewerAI Beta
Second-pair-of-eyes check before you mail
IRS Notice DecoderAI Beta
Translate IRS letters + draft a response
Treaty Memo GeneratorAI Beta
Personalized memo for your country and income type
5-Minute Filing CheckPopular
Fast routing for forms, deadline risk, and next steps
Self-Employed Tax HubNew
Transparent 1099 starting point: reserve math, extensions, reminders
File a Tax Extension
Fast path to Form 4868 or Form 7004
Sales Tax Nexus Analyzer
Check if your LLC must collect US sales tax
Foreign-Qualification CheckerNew
See if your LLC must register in another state
FIRPTA Withholding CalculatorNew
Estimate withholding when a foreign owner sells US real estate
Transfer-Pricing Method HelperNew
Pick the right §482 method for related-party deals
Landed-Cost / Tariff EstimatorNew
Estimate import duties (Section 301, §122) and landed cost
Form 3520 / Foreign-Gift CheckerNew
Do you have to report a foreign gift, inheritance, or trust?
AMT Quick-Check (1040-NR)New
Does the Alternative Minimum Tax apply to your 1040-NR?
Streamlined Eligibility CheckerNew
SDOP vs SFOP vs FBAR — find your IRS cleanup path
US Estate-Tax EstimatorNew
Estimate a non-resident's US estate-tax exposure (706-NA)
ITIN or EIN?
Find out which tax ID you need
Do I Need to File?Popular
Free 5-question assessment
Which Forms Do I Need?
Find your required IRS forms
Filing Path FinderNew
Answer a few questions and get the exact US forms, deadlines, and guides for your setup.
Bookkeeping-to-Tax OrganizerNew
Map messy records to the filing workpapers they support
ECI Assessment
Do you have Effectively Connected Income?
Entity Classification Advisor
Disregarded entity vs partnership vs C-corp
Compliance Checklist
Everything you need before filing
Calculators & Lookups
Quarterly Gig Tax CheckNew
See if you likely owe estimates and what to move by the next due date
Penalty Calculator
Calculate your IRS penalty risk
Withholding Calculator
Section 1446 partnership withholding
Filing Cost Comparison
CPA vs DIY vs platform costs
Treaty Benefits Lookup
Check your country's tax treaty with the U.S.
US Tax Calendar
All deadlines for foreign LLC owners
Guides & References
EIN Application Guide
How to get your EIN from the IRS
Refund Status Guide
Use the right IRS status path after filing
Transaction Categorizer
Which Form 5472 line for each transaction
Catch-Up Filing Guide
Missed years? How to get compliant
Reasonable-Cause Letter Template
Free template generator for Form 5472 §6038A penalty abatement
Deadline Reminder
Never miss your filing date
State Annual Report Guide
Requirements, deadlines & fees by state
Start Your Business
Step-by-step LLC formation guide with resources
BOI Report Guide
Beneficial Ownership Information filing requirements
US Bank Account Guide
How to open a US bank account for your LLC
How to Submit Form 5472
Fax vs mail, signature rules, IRS-approved delivery
LLC Dissolution Guide
How to properly close your foreign-owned LLC
FBAR Guide
Foreign bank account reporting requirements
Transfer Pricing Guide
Related-party transaction documentation
Form 5472 Amendment
How to correct errors on a prior filing
B-1 Visa Guide
Visiting the US to manage your LLC
E-2 Investor Visa
Treaty investor visa for LLC owners
Green Card Tax Transition
What changes when you become a US resident
Best States for Foreign LLCsNew
State-by-state comparison for foreign owners
DIY vs CPA FilingNew
When to self-file and when to hire a pro
Form 5472 Common MistakesNew
Top errors and how to avoid them
Bookkeeping for Foreign LLCsNew
Record-keeping essentials for compliance
Monthly Compliance RoutineNew
Stay on top of your LLC obligations monthly
Filing Season PlaybookNew
Step-by-step plan for tax season
Managing Multiple LLCsNew
Filing and compliance with multiple entities
LLC Privacy GuideNew
Protect your personal info as an LLC owner
USTB Risk GuideNew
When Form 5472 alone is not enough
Form 1120 for C-CorpsNew
Filing with 25%+ foreign-owned corporations
W-8BEN Brokerage TrapNew
Avoid the W-9 mistake on US brokerage accounts
IRS Country CodesNew
Correct codes for Form 5472 (not ISO codes)
Record-Keeping for 5472New
Track contributions & distributions accurately
Protective Filing 1120-FNew
Preserve deductions with a protective return
Form 5472 NuancesNew
Advanced tips most guides miss
Delaware Franchise TaxNew
LLC $300/year payment guide and deadlines
Wyoming Annual ReportNew
LLC $60/year filing guide and deadlines
Register a US CompanyNew
Stripe Atlas vs Doola vs Firstbase vs DIY
Mercury Bank GuideNew
Open a US business bank account for your LLC
US Phone NumberNew
Get a US phone number for Stripe and banking
Stripe Setup GuideNew
Activate Stripe payments for your US LLC
Stripe Account HealthNew
Avoid risk flags and account holds
Payment Platform ComparisonNew
Stripe vs PayPal vs Wise vs Paddle fees
Company → Personal WithdrawalNew
How to withdraw LLC funds compliantly
Investment vs Business LLCNew
Two completely different tax filing paths
When You Need 1040-NRNew
Decision guide for nonresident LLC owners
1040-NR + 5472 CombinedNew
How both filings work together
Supporting StatementsNew
What they are and when to attach them
Form 1042-S ExplainedNew
What to do when you receive one
ITIN + 1040-NRNew
Getting your tax ID when filing as nonresident
Country Guides
LLC Tax — China
US LLC guide for Chinese residents
LLC Tax — India
US LLC guide for Indian residents
LLC Tax — UK
US LLC guide for UK residents
LLC Tax — Canada
US LLC guide for Canadian residents
LLC Tax — Germany
US LLC guide for German residents
LLC Tax — Brazil
US LLC guide for Brazilian residents
LLC Tax — Australia
US LLC guide for Australian residents
LLC Tax — Japan
US LLC guide for Japanese residents
LLC Tax — South Korea
US LLC guide for South Korean residents
LLC Tax — Mexico
US LLC guide for Mexican residents
Money Transfers
Transfer to China
Send money from US LLC to China
Transfer to India
Send money from US LLC to India
Transfer to UK
Send money from US LLC to UK
Transfer to Canada
Send money from US LLC to Canada
Transfer to Japan
Send money from US LLC to Japan
Transfer to Australia
Send money from US LLC to Australia
Transfer to Singapore
Send money from US LLC to Singapore
Transfer to Germany
Send money from US LLC to Germany
Transfer to Brazil
Send money from US LLC to Brazil
Transfer to Mexico
Send money from US LLC to Mexico
Ready to file? Start filing
Guided step-by-step filing for Form 5472 + pro forma 1120. No account needed.
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