Chicago Startup & Small Business CPA
Never stress about startup taxes or bookkeeping again.
Build Accounting brings you financial peace of mind.
We keep your business finances clean, compliant, and completely off your mind—with stress-free tax filing, 24-hour responses, and proactive support from a team that truly has your back.
- Small Business Accounting
- Corporate Tax Filing
- Startup Accounting
- CFO Services
Services
Corporate Tax Preparation
We provide accurate, stress-free corporate tax filing for startups and small businesses. Our team keeps you compliant and ensures every deadline is met, so you never have to worry about penalties or missed filings again.
Accounting & Bookkeeping
Get clean, reliable monthly bookkeeping built for fast-moving founders and small business owners. Your financials stay accurate, up to date, and ready for decisions—with hands-on support and fast responses whenever questions come up.
R&D Tax Credit Support
Maximize your qualified credits without the guesswork. We help startups and small businesses identify eligible activities, document them properly, and file confidently—reducing tax liability while keeping compliance airtight.
His expertise has helped me make smarter financial decisions and save a ton on taxes. The peace of mind alone is worth every penny."
Startups We've Worked With
About Build Accounting
Expert support whenever you need it.
Brett Rosenstein is the Managing CPA of Build Accounting. With 15 years of experience in the accounting and startup industry, Brett is a highly skilled Certified Public Accountant dedicated to helping startups and small businesses navigate the complexities of accounting and taxes.
Why Choose Build?
- Unmatched Responsiveness: After listening to hundreds of startup founders, we hear the same story over and over: Most accountants take weeks to respond, slowing down your business and leaving you with extra stress. We maintain a 24-hour response policy for your peace of mind—often responding within minutes!
- Accuracy You Can Rely On: With more than 150 startups served over the past 15+ years, none of our clients have received a penalty or audit due to our work. Every tax filing and financial report is completed with meticulous care so you can avoid unwanted surprises.
- Exceptional Value: We match the pricing of popular startup accounting platforms—but with experienced CPAs, thoughtful guidance, and hands-on service they simply can’t offer. We prioritize customer experience above everything else, ensuring every client gets the attention, clarity, and timely communication they deserve.
- Proactive Support: Worried about your financial blind spots? We take care of the things you might not know to ask about—deadlines, compliance requirements, tax-saving opportunities, and potential issues—so nothing slips through the cracks.
- Built for Startups and Small Businesses: Whether you’re navigating compliance for the first time, preparing for your next fundraising milestone, or simply looking for an accountant who actually communicates, we provide financial peace of mind for every stage of growth.
Startup Incubators We've Worked With
Awards
Master your finances with startup-focused expertise.
With Build Accounting, seed stage startups and small businesses don’t need to worry about complex accounting, tax, and compliance regulations. We provide peace of mind by taking care of all of this for you.
To date, we have never had a client with a negative audit or penalty as a result of work we’ve completed.
With your finances in good hands, you can focus on scaling your startup and reaching the next milestone.
At Build Accounting, we help small businesses manage their finances, track expenses, stay tax-compliant, and develop proactive tax strategies. We handle bookkeeping, payroll, and cash flow, providing insights to drive growth.
Our goal is to simplify accounting, reduce tax burdens, and give you the tools to make smarter financial decisions and scale confidently.
Our startup accountant service helps new businesses manage their finances, stay tax-compliant, understand their KPIs, and plan for growth.
From setting up bookkeeping systems to handling payroll, budgeting, and forecasting, we ensure startups have a solid financial foundation. We assist with fundraising, track expenses, and provide insights into cash flow.
By ensuring accurate reporting, Build Accounting helps entrepreneurs focus on scaling their business while minimizing financial risks.
At Build Accounting, we specialize in helping SaaS businesses manage finances, track recurring revenue, and ensure tax compliance. We handle subscription billing, cash flow forecasting, and revenue recognition, giving you insights to scale confidently.
Our expertise in SaaS metrics and growth strategies helps streamline operations while maximizing profitability.
We help AI companies manage finances, track R&D expenses, and ensure tax compliance. We specialize in scaling operations, handling complex revenue models, and maximizing tax credits for innovation.
Our expertise supports AI startups in managing growth and optimizing cash flow, so founders stay focused on breakthrough technology.
At Build Accounting, we help fintech companies manage complex financial operations, ensure regulatory compliance, and scale efficiently. We handle revenue recognition, track transactions, and optimize tax strategies.
Our expertise supports fast-growing fintechs with financial planning, reporting, and audits—allowing you to focus on innovation and disrupting the financial industry.
Tax Preparation
Monthly Bookkeeping
Remote Accounting
Invoices and Payroll
Fractional CFO
Find clear answers today.
Ready for a custom quote? Schedule a free, no-obligation call to discuss your accounting needs.
Investors love Build Accounting.
We do more than track bank transactions or put numbers on a form. With our CFO services and proactive financial support, you’ll have the financial clarity you need to scale your startup.
Find a CPA who understands the industry, the challenges you face, and how to best position your startup for success.
We work with startups in Chicago and beyond to handle budgeting, forecasting, and fundraising—ensuring smart cash flow management and strategic growth. Our expertise helps you make informed decisions, avoid financial pitfalls, and maximize investor confidence.
We've helped startups raise millions in venture capital and private equity.
Financial Models
Runway Projections
Budgets and Forecasting
Revenue Analysis
Investor Reports
His contributions have been indispensable, not just in managing our finances but in driving our business forward. I highly recommend Brett and Build Accounting to anyone seeking a knowledgeable, proactive, and strategic accounting partner."
Startup and SaaS Accounting Resources
financial peace of mind
Stress-free accounting and tax filing is our minimum standard. Find a trusted financial partner to help you grow for years to come.
