Avoid the April surprise
Stop guessing, stop overpaying, and stop dreading April. Tillee helps you understand your paycheck, update your W-4, and make smart tax moves all year long.
Join a cohort of employees who finally feel in control of their taxes.
Tillee gives you the tools to make smarter financial decisions.
Most people fill out their W-4 once and forget about it. That's usually a mistake. Tillee walks you through exactly what your withholding should be — based on your real life, not a generic form — and helps you update it in minutes.
Got married? Had a kid? Started a side hustle? Tillee catches it.
→ See exactly how much more you could take home each paycheck.
Traditional or Roth? Pre-tax or after-tax? Your 401(k), IRA, and HSA each move your tax bill in a different direction — today and in retirement. Tillee shows you what each contribution actually does and how to capture your full employer match.
Nearing a contribution limit? Eligible for a deduction you're missing? Tillee flags it.
→ Know exactly what to contribute — and why it lowers your taxes.
RSUs, ISOs, NSOs, ESPP — equity comp is where the biggest tax mistakes hide. Tillee explains what vests when, why your withholding usually isn't enough, and how things like AMT can sneak up on you.
Shares vesting soon? Exercising options? Tillee tells you what to set aside before it's due.
→ Avoid a surprise tax bill when your shares hit your account.
Thinking about a raise, a new job, selling some stock, maxing your 401(k), or moving states? Run it through Tillee first. See exactly how each choice changes your paycheck, your refund, and what you'll owe — side by side.
→ Run the numbers before life changes them for you.
Have a tax question you're too embarrassed to Google? Ask Tillee. Our AI is trained on IRS tax code and speaks plain English — not accountant-speak. Totally private. Available 24/7.
→ No judgment. No jargon. Just answers.
Moved to a new state? Got a raise? Started freelancing? Tillee monitors your situation year-round and nudges you when it's time to make a change — before it costs you.
→ No more April surprises.
Tillee pulls in your pay and withholding info automatically. No spreadsheets. No digging through old documents.
Answer a few simple questions about your life — dependents, side income, life changes. Tillee builds your personalized tax picture.
See exactly what to change on your W-4, how it affects your paycheck, and what to watch for throughout the year.
Tillee sends you reminders when life events or tax law changes mean it's time to revisit your withholding. Taxes become a year-round habit, not a yearly panic.
"I never understood why I always owed money in April. Tillee showed me exactly what was wrong with my W-4 in about ten minutes."
“I didn't realize I was giving the government a $3,000 interest-free loan every year.”
“It finally feels like someone is on my side when it comes to taxes.”
Join the waitlist and be the first to know when Tillee launches. Early access is free.
Start making the right choices and save today.