Startups get a 10% discount (capped at $1,000) for the first twelve months of bookkeeping, bill pay, payroll support, and more.

In partnership with Startup Stack

Leading VCs trust OpStart with their portfolio companies
Bookkeeping - Financial Operations
Back Office Setup - Financial Operations
Billing and Invoicing - Financial Operations
Fractional CFO - Financial Operations
Payroll Setup & Compliance -Financial Operations
Taxes - Financial Operations

Full stack financial operations for startups

We help startups manage their accounting and finance functions with unprecedented ease. Don’t fret over bookkeeping, billing, budgets or board reports — just leave it all to us.


Clean financial statements & reports hit your inbox each month. They are prepared on a accrual basis and reviewed by your dedicated OpStart controller. You can ask questions or request changes at any time – our team is here to help.


For one flat price, our tax team will handle all your essential filings throughout the year: income taxes, 1099s, Delaware franchise taxes, K-1s, and more. If you qualify for R&D tax credits, we’ll take care of that too so you maximize savings. It’s a pain-free experience for founders: just sign-up in January and let our experts do the rest.

Fractional CFO

Stay on top of your metrics, goals, and momentum with strategic support from our fractional CFOs. We produce custom KPI dashboards, operating models, forecasts, and more so your management team and board members stay focused on the right targets. If you need to raise capital, we’ll help you shape your metrics into a powerful narrative and create a deck + data room that will impress investors.

Billing & Invoicing

Never worry about paying another bill or sending an invoice – We take care of all your bills, customer contracts, and invoicing, and track incoming and outgoing payments. Forward bills directly to our team and we’ll set them up for payment (with your approval, of course). Share your customer contracts with us and we’ll create all necessary invoices (while ensuring revenue is recognized appropriately). It’s a truly hands-free experience for making and collecting payments.

Payroll Setup & Compliance

Payroll software makes it easy to cut checks and withhold taxes automatically, but we think founders deserve more support. Our experts are on-call throughout the year to help you respond to notices, register in new states/jurisdictions, make system adjustments, and more. Turn off those system notifications and stop fretting over the mail you receive from state agencies – we’ve got it covered.

Back Office Setup

Focus on scaling your startup – not setting up back-office software. Our team will construct a software stack that scales with your business, allowing you to operate efficiently from day one.

We integrate with all your favorite systems

Redeem Your Discount

Startup Stack members get 10% off.