Trusted by 500+ US Businesses

Accounting & Tax
Compliance Solutions for
US Businesses

Built for Every US Business

End-to-End Compliance Support

SOC 2 Compliant

Powering businesses from Start-ups to Enterprises

0+US Businesses Supported

0+US Incorporations

0+Tax Filings Managed

One platform for all your back-office operations

From incorporation to compliance, payroll, tax, and beyond, all connected in one platform.

Fin-Start

Start your US business, the right way

From entity structuring and incorporation to EIN, banking, corporate documents, and essential setup, everything needed to set up your US business right.

Fin-Books

Keep your books clear and organized

From bookkeeping and reconciliation to invoices, bill pay, financial reports, and integrations, keeping your business finances organized and accurate.

Fin-Sights

See your financials in real time

From real-time dashboards and key business metrics to cash forecasts, budget vs actuals, and investor reports, everything needed to track performance and stay in control.

Fin-Tax

Keep your business tax-ready

From income tax and sales tax to payroll taxes, county filings, and R&D tax credits, everything needed to manage business taxes accurately and stay compliant year-round.

Fin-Hire

Simplify payroll compliance across states

From employer registrations and onboarding to payroll, benefits, reimbursements, and state compliance, built to simplify payroll and support your team.

Fin-Stock

Keep your cap table and equity organized

From cap table management and stock certificates to 409A valuations and 83(b) filings, built to keep your equity clear, compliant, and structured as you grow.

Fin-Comply

Stay on top of every business compliance

From tax and accounting compliances to federal, state, county, and city requirements, bringing all your business obligations into one place so nothing gets missed.

FinStackk is built differently to simplify US business

All-in-one platform built with experts, technology, and connected systems to support every stage of US business.

Qualified experts and no chat bots

Interact with qualified experts for assistance every time you reach out to us, and not any bots.

Tara Brooks · Account #9142163

You

CPA

Tailormade solutions

Tailored compliance solutions: Pay only for what your business needs.

Fin-Start

Fin-Books

Fin-Hire

Fin-Tax

Fin-Stock

Fin-Comply

Fin-Sights

Fin-Ally

Fin-Start

Fin-Books

Fin-Hire

Fin-Tax

Fin-Stock

Fin-Comply

Fin-Sights

Fin-Ally

Fin-Start

Fin-Books

Fin-Hire

Fin-Tax

Fin-Stock

Fin-Comply

Fin-Sights

Fin-Ally

Fin-Start

Fin-Books

Fin-Hire

Fin-Tax

Fin-Stock

Fin-Comply

Fin-Sights

Fin-Ally

Fin-Start

Fin-Books

Fin-Hire

Fin-Tax

Fin-Stock

Fin-Comply

Fin-Sights

Fin-Ally

Fin-Start

Fin-Books

Fin-Hire

Fin-Tax

Fin-Stock

Fin-Comply

Fin-Sights

Fin-Ally

0-100 support for startups

From incorporation to IPO, we are equipped and committed to support your journey.

Compliance automation at it’s very best

Forget outdated calendars. Our real-time dashboard tracks your compliance progress year-round, notifying you only when action is needed. Everything else is handled automatically, making compliance effortless.

Income Tax Auto-scheduled

Federal

Yearly

Due April 15

State

Yearly

Due April 15

Sales Tax Auto-scheduled

State

Monthly

Due 20th

County

Quarterly

Due 15th

Your AI copilot for accounting & tax compliance

Ask Fin-AI. Stay ahead of everything that matters.

No more digging through reports, deadlines, or compliance calendars. Fin-AI gives you instant answers, clear insights, and the visibility to stay ahead.

Answers grounded in your real financial data
Up-to-date with the latest tax laws & regulations
Escalates to human experts when needed

Hello! I'm Fin-AI, your AI assistant.

How can I help you today?

Ask me anything…

Overdue Compliance ItemsCash Flow AnalysisIncome Statement Analysis 2026Document Review/Request Status

Web & Mobile App

Your entire US business, in your pocket

Stay connected to your business across web and mobile with real-time visibility, expert support, and secure access, whether you’re at your desk or on the move.

Real-Time Business Tracking

Track compliance, payroll, tax filings, and key deadlines instantly.

Live Financial Visibility

See your numbers, balances, and business performance anytime.

Secure Document Management

Safely store, manage, and access your important business and financial documents anytime.

Why people love FinStackk

Real experiences from founders and business owners who trust FinStackk to stay compliant and grow with confidence.

Exceptional accounting and compliance services provided by experienced CPAs, offering prompt and professional...

Exceptional accounting and compliance services provided by experienced CPAs, offering prompt and professional support for US accounting needs.

Sharath Kumar

TME SURFACES

Finstackk has been providing services to our company and its subsidiaries for the past year. They are professi...

Finstackk has been providing services to our company and its subsidiaries for the past year. They are professional, timely and understand the challenges from our perspective. Proactive in their approach and forthcoming in providing solutions. Great team to work with.

Kumar Podila

CYIENT INC

Excellent experience with knowledgeable and highly responsive support across tax, payroll, and accounting requ...

Excellent experience with knowledgeable and highly responsive support across tax, payroll, and accounting requirements. The process was smooth, flexible, and well-managed throughout.

Shrinivas K

Cyient DLM

FinStackk has provided responsive and dependable payroll support throughout our engagement. Their proactive co...

FinStackk has provided responsive and dependable payroll support throughout our engagement. Their proactive communication and ability to resolve issues efficiently across time zones made the overall experience smooth and highly reliable.

Vijay Kumar

Amagi

Our first year with FinStackk was a great experience. They were responsive, detail-oriented, and highly collab...

Our first year with FinStackk was a great experience. They were responsive, detail-oriented, and highly collaborative throughout our multi-company tax filings. Everything was handled on time with clear communication, strong bookkeeping and tax knowledge, and reliable coordination across payroll and compliance requirements.

Sivarama S

iSolve Technology Inc

Great support and a smooth overall experience across accounting and business tax preparation services.

Sunil Gundrathi

Quadrant Technologies

We've had an excellent experience with FinStackk for our accounting and advisory requirements. Their support h...

We've had an excellent experience with FinStackk for our accounting and advisory requirements. Their support has been knowledgeable, responsive, and proactive, making day-to-day financial operations and advisory processes smooth and reliable.

Dheeraj Khandelwal

Logic Pursuits Inc

Working with Finstackk was a breeze! They guided us through the entire process with professionalism and patien...

Working with Finstackk was a breeze! They guided us through the entire process with professionalism and patience. Great team!

Leetu Panda

AUGMENTARE INC

Finstackk professionals are very thorough, fast, and reliable. Taxes and books are done right. Highly recommen...

Finstackk professionals are very thorough, fast, and reliable. Taxes and books are done right. Highly recommend!

Jayesh Shete

TEKSKOPE LLC

Finstackk made our US incorporation seamless with clear guidance, tailored support, and quick solutions. Their...

Finstackk made our US incorporation seamless with clear guidance, tailored support, and quick solutions. Their proactive approach and user-friendly SaaS platform truly stood out. More than a service, they've built a valuable, supportive partnership.

Shams Ahmed

ALTIBBE HEALTH PVT. LTD

Finstackk has been an exceptional company to work with. Their user-friendly platform makes managing finances e...

Finstackk has been an exceptional company to work with. Their user-friendly platform makes managing finances easy, and their support team is always responsive and helpful. Highly recommend to any business looking to streamline financial management!

Vineeth Yeddula

QUANTA HEALTH

Finstackk is an exceptional CPA firm with expertise in accounting, tax planning, cross-border operations and f...

Finstackk is an exceptional CPA firm with expertise in accounting, tax planning, cross-border operations and financial strategy. Their attention to detail and communication make them invaluable. Whether tax filing, accounting or consulting, they offer clear guidance. Highly recommend them as a trusted CPA.

Rajesh Revankar

DTC INTERNATIONAL INC

We use Finstackk services for our US company accounting. Highly recommend this for any startups for hassle-fre...

We use Finstackk services for our US company accounting. Highly recommend this for any startups for hassle-free CFO services as they understand local laws very well.

Bharat Thej

Propeye INC

Partnering with Finstackk was one of my best decisions. Their dedicated team guided me from incorporation to t...

Partnering with Finstackk was one of my best decisions. Their dedicated team guided me from incorporation to tax compliance, ensuring I had what I needed. The trust I've built with them lets me focus on growth. Highly recommend them to startups seeking a true partner.

Lokesh Dani

XOPOLIS INC

Had an excellent experience with Finstackk. Their team was professional, knowledgeable, and responsive. They t...

Had an excellent experience with Finstackk. Their team was professional, knowledgeable, and responsive. They took time to understand my financial situation and offered tailored advice that saved me time and money. Highly recommend them for reliable, expert support!

Ravi Nallamala

CAMIL SYSTEMS INC

Finstackk has been amazing in helping us open our company bank account in the USA. The team explained every st...

Finstackk has been amazing in helping us open our company bank account in the USA. The team explained every step according to our needs.

Bharadwaj Sunkenapelly

GYTWorkz Technologies

Very happy with the overall experience and support provided.

M Vivek

HillSoft Business Solutions

We've had a great experience with FinStackk so far. Their team is professional, responsive, and easy to work w...

We've had a great experience with FinStackk so far. Their team is professional, responsive, and easy to work with. The platform makes compliance tracking and reporting seamless, and they've simplified multi-state tax and compliance management with reliable ongoing support.

Sri Giridharan

Prana Kitchens

We've had an excellent experience with FinStackk for bookkeeping and tax filings. Their support has been respo...

We've had an excellent experience with FinStackk for bookkeeping and tax filings. Their support has been responsive, reliable, and always available when needed. From tax-saving guidance to account management, everything has been handled smoothly, professionally, and with great attention to detail.

Rajesh Kasaraneni

Nyka Tech Inc

FinStackk made our US entity formation process smooth and hassle-free. From entity selection and documentation...

FinStackk made our US entity formation process smooth and hassle-free. From entity selection and documentation to compliance guidance and banking setup, everything was handled with professionalism, responsiveness, and clear communication throughout the process.

Sekhar Reddy

Event Registration Solutions Inc

FinStackk has consistently provided proactive and reliable support. The overall experience has been smooth, pr...

FinStackk has consistently provided proactive and reliable support. The overall experience has been smooth, professional, and highly responsive across accounting and business tax preparation services.

Dr. Ashwini Kumar Rath

Batoi Systems Inc

FinStackk provided clear guidance and strong support throughout the process. Queries were handled with good kn...

FinStackk provided clear guidance and strong support throughout the process. Queries were handled with good knowledge, quick responses, and a smooth overall experience across payroll and tax-related requirements.

Jagadeesh Babu P

Acepro India

FinStackk has been a reliable partner across bookkeeping, compliance, and global incorporations. The experienc...

FinStackk has been a reliable partner across bookkeeping, compliance, and global incorporations. The experience has been smooth, responsive, and highly professional, with accurate bookkeeping, proactive communication, and clear guidance that simplified complex cross-border operations and ongoing compliance requirements.

Sreerag Menon

Hexafort Inc

FinStackk provided a smooth and professional experience for our tax filing requirements. The process was handl...

FinStackk provided a smooth and professional experience for our tax filing requirements. The process was handled with responsiveness, strong attention to detail, and timely execution, making tax and compliance management reliable and stress-free.

Nafih S P

HealthCubed

FinStackk has consistently delivered professional and responsive support across accounting, payroll, and tax r...

FinStackk has consistently delivered professional and responsive support across accounting, payroll, and tax requirements. Their attention to detail, timely communication, and reliable execution have made managing financial operations smooth and stress-free.