Estimated Tax Safe Harbor Explained
Plain-English 2026 estimated tax safe harbor guide covering the $1,000 rule, 90% current-year rule, 100% or 110% prior-year rule, and timing limits.
U.S. Income Tax
Articles and calculators about U.S. federal income tax, estimated payments, self-employment tax, IRS payment options, and tax bills.
Who Needs an ITIN? Nonresident, Spouse, Dependent, Treaty, and Refund Examples
Learn who may need an ITIN, when an SSN is not available, and how ITINs relate to nonresident returns, treaty claims, dependents, and withholding refunds.
Do I Need an EIN for My Side Business?
When a side business, creator, contractor, or single-member LLC may need an EIN, and when an SSN or ITIN issue is different.
U.S. Tax Setup for Non-U.S. Creators: W-8BEN, ITINs, Treaties, and Platform Withholding
A practical U.S. tax setup guide for non-U.S. creators receiving platform income, including W-8BEN, ITIN, treaty claims, withholding, and U.S. LLC issues.
Do I Need an LLC for My Side Business? Tax, Liability, Cost, and Timing Guide
Decide whether a side business needs an LLC by comparing liability risk, tax treatment, state costs, business partners, and when an LLC does not reduce tax.
Cannot Pay Your IRS Tax Bill? What to Do Before Penalties Grow
What to do if you cannot pay your IRS tax bill in full, including filing anyway, paying what you can, payment plans, and recordkeeping.
IRS Direct Pay vs Online Account: Which Payment Option Should You Use?
Compare IRS Direct Pay with IRS Online Account for tax payments, payment history, scheduling, and estimated tax payments.
IRS Direct Pay Payment Types Explained
Learn which IRS Direct Pay payment type to choose for estimated tax, balance due, extension, amended return, or installment payments.
IRS Payment Plan vs Credit Card: Fees, Interest, Penalties, and Cash-Flow Tradeoffs
Compare an IRS payment plan with credit card, debit card, and loan options when you cannot pay a federal tax bill in full.
IRS Direct Pay Mistakes to Avoid
Avoid IRS Direct Pay mistakes with tax year, payment type, form choice, bank details, and confirmation records before paying.