Deduckt
Tax Guides How it works Sign in Get started free
Free to start · no card

Find out if you overpaid your taxes.

TurboTax files your taxes. We make sure you didn't hand the IRS money you never owed, and we keep watching all year so it doesn't happen again.

Create a free account See how it works
🔒 Encrypted & never sold We can't file or change your return Delete anytime
$3,138
Average federal refund, often money you could have kept during the year
IRS, 2024 filing season
~2 in 3
of filers get a refund instead of keeping the money through the year
IRS
$10k+
what the RSU double-tax mistake can cost when a broker reports the wrong cost basis
CPA analysis
12M
words in the U.S. tax code (27 pages in 1913)
Tax Foundation
Why this happens to smart people
You're not bad at taxes. The system is impossible to track by hand.
369
tax code changes a year
Averaged 2000 to 2024. No human keeps up, and filing software won't tell you what you missed.
7.1B
hours spent filing
Americans burn $536B a year complying, and still overpay because compliance is not optimization.
$24B
in free money left behind
Unclaimed 401(k) match alone, every year. One of dozens of quietly missed opportunities.
Money that hides in your return
We look where filing software never does.
Example: +$4,320
Stock-grant shares taxed twice
When you get paid in company stock (RSUs), your broker often reports a $0 purchase price, so income already on your W-2 gets taxed a second time. See how this happens →
+0.5 to 1.3%/yr
Missed loss harvesting
Selling losing investments to offset your gains (called loss harvesting) can add 0.5 to 1.3% to your after-tax return a year (Vanguard).
Example: +$1,336
Unclaimed employer match
1 in 4 workers leave part of their free 401(k) employer match on the table every year.
Plan this year, not just review last year
Selling investments in 2026? See the tax before you sell.
Time your sales
We flag unrealized losses sitting next to your gains, so you can harvest before year-end instead of finding out in April.
Watch the cliffs
Some income levels trigger surprise taxes once you cross them. We watch those lines for you and warn you before a sale pushes you over one.
Know the hit first
See the estimated tax on a sale up front, while you can still pick the lot, change the timing, or donate the shares instead.
A real example
A dual-income California household did everything right, and still left $5,600 on the table.
$5,600 missed
Both 401(k)s maxed. FSAs elected. Charity given.
The misses weren't laziness, they were timing. Their income drifted $10,217 past a threshold that quietly shrinks the state-and-local-tax deduction, and they let $15,000 of investment losses sit unused next to gains they could have offset. Exactly the kind of thing only year-round tracking catches.
How it works
Three steps. Your first look takes minutes.
1
Create your free account
Sign up with Google or email. Your data is encrypted and private to you.
2
Connect an account or upload your return
Link a brokerage or bank for an instant read, or upload last year's 1040. No IRS transcript on hand? A PDF of your return works, and we will show you how to pull a transcript in about a minute.
3
See exactly what you missed
A ranked, plain-English list of what it cost you and what is still fixable, watched all year.
Who's behind Deduckt
We built the tool we wished we'd had.
An independent, self-funded team
Deduckt started when we reconstructed our own returns to the dollar and found thousands in savings we had missed, not through loopholes, just timing and thresholds nobody was watching. We are not a bank, a broker, or the IRS. We do not move your money and we cannot file for you. We read your numbers, check every figure against current IRS rules, and show you what is still fixable. See exactly how we handle your data.
Get your exact number.

Create a free account, connect an account or upload last year's return, and see what you overpaid. No card to get your number.

Create a free account

Already have an account? Log in.

Your data, your control

🔒 Bank-level encryption
🛡 We are not the IRS
🗑 Delete your data anytime
✓ We never sell your data
Deduckt · estimates and information, not tax advice We are not the IRS · encrypted · never sold · Privacy · Terms · Security policy