Our Mission
Quarterly estimates shouldn't require tax-prep software or an afternoon of IRS worksheets. EstimatedTax.com computes both official IRS methods on your real numbers, safe harbor and annualized income, and shows you the lower payment the law allows. Professional-grade math, plain-language questions.
Meet Our Team
Shiang Lin
Founder & CEO
Shiang is a quantitative engineer with extensive experience developing algorithms and models for financial markets. He founded EstimatedTax.com to bring enterprise level tax software to small businesses and accounting firms at an affordable price, and leads the development of its technical infrastructure and core tax engine.
Firm: Lin Partnership LP
Certifications: Series 65
Experience: SpaceX launch data at The Aerospace Corporation, Portfolio Manager
Specialties: Financial Algorithm Development, Data Engineering, Market Modeling
Website: thelinfund.com
LinkedIn: linkedin.com/in/shianglin
Steven Wu, CPA
Co-Founder & Chief Tax Officer
Steven is a licensed CPA who specializes in helping businesses navigate complex tax situations. He spent years at PwC, one of the Big Four accounting firms, before becoming Head of Tax at 6sense, a multi-billion dollar corporation.
Firm: TSW Core P.C. - CA Registered Accountancy Corporation
Certifications: Licensed CPA
Experience: PwC, Head of Tax at 6sense
Specialties: Tax Planning, Strategic Financial Advising, International Taxation
Website: tswcore.com
LinkedIn: linkedin.com/in/thestevenwu
How we build it
Built on IRS Publication 505
Both official IRS methods, safe harbor and annualized income, computed the way the publication defines them. No rule-of-thumb percentages anywhere.
Tax figures audited against the source
Brackets, thresholds, and wage bases are checked against IRS revenue procedures and Social Security Administration tables, then pinned by an automated test suite so they cannot drift.
Nothing connects to your accounts
You type dollar amounts. Nothing links to your bank, your books, or your tax software, and nothing is pulled from them.
Your data is never sold
We use your numbers to calculate your taxes and for nothing else. No selling, no sharing with third parties.
Have Questions?
While EstimatedTax.com is designed to be intuitive, we understand that tax situations can be complex. Our team is here to help if you need guidance on using the calculator or interpreting your results.