Why Fifteenth
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Partners

Certified Public Accountant
12+ years experience

Juris Doctor, Attorney in New York
7+ years experience

Certified Financial Planner®, Enrolled Agent, and Equity Compensation Associate
8+ years experience

6+ years experience

Enrolled Agent
4+ years experience

Certified Public Accountant
5+ years experience
Upload what you have, link your accounts, or let us track it down. We take care of all the grunt work so you don't have to think about it.
Flat annual fee means you can message your CPA without calculating the cost per question.
See your return status, next steps, and timeline. No more black holes.
Our AI platform works alongside your tax team to scan for thousands of potential issues. You get the judgment of world class human expertise with the precision of automation.



Upload what you have, link your accounts, or let us track it down. We take care of all the grunt work so you don't have to think about it.
Flat annual fee means you can message your CPA without calculating the cost per question.

See your return status, next steps, and timeline. No more black holes.
Our AI platform works alongside your tax team to scan for thousands of potential issues. You get the judgment of world class human expertise with the precision of automation.
"Fifteenth has made my life so much easier as a VC. The process is smooth and my dedicated team handles all of my K1s without any hassle. With Fifteenth, I don’t have to worry about a thing."
"Fifteenth helped me easily navigate ISO exercises by building a model to weigh the pros and cons of various scenarios. Throughout the year, they’ve also been proactive in helping me estimate my tax obligations and stay on top of quarterly payments. Would highly recommend them!"
"I love that we do proactive tax planning and tax estimates so that there’s no surprises at filing time. I know exactly what I’m going to owe and have time to adjust strategy before the year ends. "
"My tax advisor was thorough and responsive. They answered all my questions and explained in very clear terms. Professional and timely responses from high quality CPAs."
"I needed on demand help and your team was responsive throughout. Not only did you provide quick advice, but you were professional, timely, and thoughtful. It was so hard to ask my accountant these questions before. "
"I don’t have the time and energy to optimize my entire tax picture with options, RSUs, and AMT carryforwards. The Fifteenth team are truly experts at building tax strategies for equity comp. "
"This is the future. The portal is user friendly, tech forward, and made doc upload super easy. I can see exactly where everything is in the process. Having a real CPA in the loop when I need them is great."


