What we do

Accounting operations built for how startups actually work.

From day-one bookkeeping to Series B financial infrastructure — we handle the full stack of finance operations so your team can stay focused on growth.

Core

Bookkeeping & Month-End Close

Accurate, timely books every month. We handle transaction categorization, reconciliations, and close packages so your financials are always investor-ready.

  • Monthly close package
  • Bank & credit card reconciliations
  • Transaction categorization
  • Accruals & adjustments
  • Investor-ready P&L and balance sheet
Core

Accounts Payable & Receivable

Streamlined AP/AR workflows that keep cash flowing. We manage vendor payments, invoice tracking, and collections so nothing falls through the cracks.

  • Vendor bill processing
  • Payment scheduling & execution
  • Invoice creation & delivery
  • Collections follow-up
  • Cash flow visibility reporting
Core

Payroll Operations

Full-cycle payroll processing for startups at every stage — from first hire to Series B. Compliant, on-time, and integrated with your HR stack.

  • Payroll processing & disbursement
  • Multi-state compliance
  • Benefits & equity coordination
  • Payroll tax filings
  • HR system integration
Reporting

Financial Reporting

Clear, actionable financial statements formatted for founders, boards, and investors. No noise, just signal.

  • Monthly P&L, balance sheet, cash flow
  • Board-ready reporting packages
  • KPI dashboards
  • Budget vs. actuals variance analysis
  • Investor data room support
Strategic

Startup CFO Support

Strategic financial guidance without the full-time CFO cost. Budgeting, forecasting, runway analysis, and fundraising prep — when you need it.

  • Annual budget & quarterly forecasts
  • Runway & burn rate modeling
  • Fundraising financial prep
  • Cap table coordination
  • Board meeting support
Compliance

Tax Readiness

Year-round tax preparation and compliance. We keep your books clean and your filings accurate, so tax season is never a fire drill.

  • Year-round tax readiness
  • R&D tax credit documentation
  • State & local compliance
  • 1099 preparation & filing
  • Audit support

How we work

Onboarding in days, not months.

01

Discovery call

We learn your stack, your stage, and what's keeping you up at night. No generic intake forms.

02

Clean-up & setup

We audit your existing books, clean up any backlogs, and connect your tools — QuickBooks, Gusto, Stripe, and more.

03

Ongoing operations

Your dedicated team takes over day-to-day finance ops. Monthly closes, reporting, and strategic support — on schedule, every time.

04

Scale with you

As your headcount and complexity grow, we flex the team to match. No re-contracting, no gaps in coverage.

Ready to hand off your books?

Tell us where you are and what you need. We'll put together a scope that fits.

Black Sea Partners

Accounting operations and bookkeeping built for tech startups that move fast.

Location

Remote · San Francisco Bay Area

Serving tech startups nationwide

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© 2026 Black Sea Partners. All rights reserved.

Precision accounting for startups that scale.