Resources
Guides written from real client questions. No sign-up wall, no sales pitch — read them and decide for yourself whether you need help.
Narrow the library
12 guides
Individual & Family TaxWhy Is My Spouse's Income So Low, Yet Our Estimated Tax Payment Is So High?3 min read · Tax year 2026Estimated tax · Married filing jointly · Self-employment taxLast reviewed Oct 2026
International & Foreigner TaxInternational Tax Guide75 min read · Tax year 2025Handbook · FBAR · ITIN · Tax residencyLast reviewed Oct 2026
International & Foreigner TaxIf a Foreign National Stays in the U.S. for 183 Days, Do They Become a U.S. Tax Resident? What Income Must Be Reported?17 min read · Tax year 2026Tax residency · 183-day test · Days in the U.S.Last reviewed Oct 2026
International & Foreigner Tax2025 Tax Document Checklist for People Abroad and Foreign Nationals (Professional Edition)24 min read · Tax year 2025Document checklist · Foreign accounts · Foreign companiesLast reviewed Oct 2026
International & Foreigner TaxA Guide to Foreign Bank Account Reporting for U.S. Citizens and Residents16 min read · Tax year 2026FBAR · Foreign accounts · Form 8938Last reviewed Oct 2026
International & Foreigner TaxApplying for a U.S. ITIN from Abroad: Passport Certification, Notarization, and Document Preparation When You Cannot Travel to the United States10 min read · Tax year 2026ITIN · Form W-7 · Passport certificationLast reviewed Oct 2026
International & Foreigner Tax2025 Simple Filing Guide for Individuals Abroad and Foreign Nationals4 min read · Tax year 2025Nonresidents · Filing checklist · Days in the U.S.Last reviewed Oct 2026
International & Foreigner TaxForm 5471 Is No Longer Just an Information Return: The GILTI Rules Every U.S. Taxpayer Holding Shares in a Foreign Company Must Understand4 min read · Tax year 2026Form 5471 · GILTI · Foreign companiesLast reviewed Oct 2026
International & Foreigner TaxDo Green Card Holders Have to File Expatriation Tax Returns When Giving Up Their Green Card?3 min read · Tax year 2026Green card · Expatriation tax · Form 8854Last reviewed Oct 2026
Real Estate1031 Exchange: What Documents Should You Provide to Your CPA and How Is Partial Gain Calculated?3 min read · Tax year 20261031 exchange · Capital gainsLast reviewed Oct 2026
Savings & Retirement AccountsTrump Accounts: What They Are and Who Can Open One4 min read · Tax year 2026Trump Accounts · Children · Form 4547Last reviewed Oct 2026
Savings & Retirement AccountsTrump Accounts: The Financial-Institution Rules2 min read · Tax year 2026Trump Accounts · BrokeragesLast reviewed Oct 2026
Get ready to file
ToolsWhat to bringTick what applies to you for the tax year you are filing and get the list of documents to bring. Nothing you tick leaves this page.
ToolsTax deadlinesFederal, FBAR and California dates for the next fifteen months, already moved for weekends and holidays.
ToolsWhat does my IRS or FTB letter mean?Type the code printed in the corner of the letter — CP2000, LT11, Letter 4883C, FTB 4502. Only the code: never your Social Security number or anything else from the letter.
ToolsPay, check a refund, or check a letterGovernment websites only. Scammers copy these pages, so check the address in your browser before you pay or sign in.
Tools183-day counterCount your days in the United States the way the IRS does for the substantial presence test. Nothing you type leaves this page.
ToolsEstimated tax: the safe harborThe least you need to have paid during the year to avoid the underpayment penalty, federal and California, and how it splits across the four payments. Nothing you type leaves this page.
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