Tax & visa math,
done in seconds.

What this site is

Money questions rarely come up at a convenient time. A client sends a 1099. A job offer arrives as an hourly contract rate. Your RSUs vest, or you sell a rental, or a lawyer tells you your green card case needs a source-of-funds trail. That's usually when you want a number you can trust, quickly, without handing over your email address.

1099tax.app is a free collection of calculators and estimators built for that moment. Each tool answers one question, uses the official 2026 figures from the IRS, the Social Security Administration, USCIS and state revenue departments, and shows its work, so you can see how the number was reached. The tools run in your browser. Most need no sign-up at all.

We built the site for people who are good at their work but don't do taxes for a living: freelancers and gig workers, small business owners, employees paid partly in stock, landlords and investors, retirees with a side business, and families going through U.S. immigration. You can read more about who we are and how we keep the site free on our About page.

Calculators vs. estimators

The tools come in two kinds, and it helps to know which one you're using.

• Calculators return a dollar figure: your self-employment tax, the tax on a sale, the contract rate that matches a salary. They apply 2026 brackets, rates and limits to the numbers you enter.
• Estimators score readiness or compare paths: how well an EB-2 case lines up, whether your capital clears the EB-5 minimum, which states your sales might create a sales tax obligation in. They give a structured picture rather than a single amount owed.

Both kinds are only as good as the numbers you put in. A quick estimate with round numbers is fine for planning. If you're about to sign, file or wire money, use real figures from your records.

How to pick the right tool

Start from the question you're actually asking. Here is a plain-English map.

“I work for myself. What do I owe?”

• Self-Employment Tax: your 2026 SE tax (15.3% on 92.35% of profit, with Social Security capped at $184,500), federal income tax, and what to send at each quarterly deadline.
• 1099 vs W-2 Rate: if you're comparing a contract offer with a salaried job, this finds the 1099 rate that leaves you equally well off.

“Should I change how my business is set up?”

• LLC vs S-Corp: whether an S-Corp election saves money after a reasonable salary and the extra costs, and the profit where it breaks even.
• LLC & Trust State Planner: formation and annual fees by state, trust-friendly states, and EIN rules.
• Sales Tax: add tax to a price or back it out of a total, for any state.
• Sales Tax & VAT Nexus Desk: where your sales may require you to register and collect sales tax or VAT.

“I'm selling, vesting or saving.”

• RSU Vest Tax: whether the default 22% withholding covers what you'll actually owe on a vest.
• Capital Gains Tax: tax on selling stock, property or crypto, including depreciation recapture and the 3.8% Net Investment Income Tax.
• 1031 Exchange: how much gain you can defer by exchanging investment property, and when your 45- and 180-day deadlines fall.
• 401(k) vs IRA vs Roth: traditional vs. Roth savings using the 2026 contribution limits.
• Student Loans & Credits: whether refinancing helps, and whether education credits can raise your refund.

“I'm moving to, or away from, the United States.”

• EB-5 Investment Check: whether your capital clears the $800,000 TEA or $1,050,000 standard minimum.
• Direct vs Regional Center: the five-year cash cost of creating 10 jobs yourself compared with investing through a regional center.
• EB-2 Readiness Score: how a PERM or National Interest Waiver case lines up, with no investment needed.
• Plan B Residency & Passport Tax: where you might move, and whether U.S. exit tax could apply.

Still not sure?

Ask yourself what the decision is. If it's “how much do I set aside,” start with Self-Employment Tax or RSU Vest Tax. If it's “which option is cheaper,” try LLC vs S-Corp, 1099 vs W-2, or 401(k) vs Roth. If it's “do I qualify,” go to the EB-5 or EB-2 estimators. Many situations touch more than one tool. A freelancer thinking about an S-Corp, for example, might run Self-Employment Tax first to see today's bill, then LLC vs S-Corp to see what changes.