Explainers on US federal taxes: brackets, deductions, credits, FICA, capital gains, estimated payments and forms like the W-4, with calculators to test your numbers.
What the W-4 actually controls, why the goal is accuracy not a big refund, and how to estimate your withholding before submitting one.
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Who actually needs to pay quarterly estimated taxes, the four due dates, and how to calculate a reasonable payment amount.
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Why self-employed workers pay a 15.3% tax that W-2 employees never see directly, and how the deductible half actually works.
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What the standard deduction actually does to your tax bill, how it compares to itemizing, and the current amounts by filing status.
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How to avoid an underpayment penalty on estimated taxes -- the 100%/110% prior-year rule and the 90% current-year rule explained.
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What backup withholding is, why it's a flat 24%, and the situations -- usually a missing TIN -- that actually trigger it.
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What the 3.8% NIIT is, who actually owes it, and how it applies on top of regular capital gains and investment income tax.
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The difference between short-term and long-term capital gains tax, why holding an investment for over a year usually matters a lot, and how to estimate yours.
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How the Child Tax Credit works -- the per-child amount, the income phase-out, and how it differs from the Earned Income Tax Credit.
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What the EITC is, who typically qualifies, and how the credit phases in and out based on income and number of children.
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Why you get a refund at all, how to estimate yours before filing, and why a huge refund isn't actually the financial win it feels like.
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A plain explanation of FICA -- the Social Security and Medicare tax on every paycheck -- including the wage base cap and what it actually funds.
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The real tax and financial difference between being a W-2 employee and a 1099 independent contractor -- self-employment tax, deductions, and what to negotiate for.
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A clear explanation of how progressive tax brackets actually work -- why moving into a higher bracket doesn't mean all your income gets taxed at that rate.
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