What we do.

Client Accounting Services (CAS) is an outsourced, integrated finance function that combines bookkeeping, controller, and fractional CFO capabilities as a single monthly service. Instead of hiring separate roles, a CAS partner functions as your finance department: books close on a predictable cadence, reports are timely and executive-ready, and decisions are informed by real data rather than spreadsheets someone remembers to update.

Most growing businesses do not need a full-time CFO until they are well past $10 million in revenue with an established finance infrastructure already in place. A fractional CFO delivers strategic finance leadership (forecasting, financial modeling, cash planning, executive-level reporting) without a full-time salary. If your business is between $1M and $10M and your books are still being closed by a bookkeeper or the founder, a fractional CFO paired with strong bookkeeping and controller support usually delivers more value than a full-time hire.

A bookkeeper handles day-to-day transaction recording: invoices, expenses, bank reconciliations, and payroll processing. A controller sits on top of the bookkeeping and produces the financial statements and management reports leadership actually reads. They close the month, review the bookkeeper's work, catch errors, and build the executive dashboard. A fractional CFO operates one level above, setting the reporting framework, building financial models, running scenario analyses, and translating financial data into strategic decisions. Most growing businesses need all three functions. A CAS engagement bundles them into a single integrated service.

No. Creative agencies are one of several industries we serve. Our clients span creative agencies, advertising agencies, professional services firms, technology companies, healthcare, hospitality, consumer products, and non-profits. We work with growing businesses across every industry where clear, real-time financial clarity matters.

We work with growing businesses across creative agencies, advertising agencies, professional services, technology, healthcare, hospitality, consumer products, and non-profit organizations. Named case study clients include Ray Enterprises (consumer electronics, acquired by Amazon), AREA 17 and HUSH (creative agencies), Respire Medical (healthcare, acquired by Whole You and Mitsui Chemicals), and Silverline (Salesforce consulting, growth investment from Pamlico Capital).

Black Ink Business Services was founded in 2007 in Brooklyn, New York. We have operated continuously for more than 15 years, expanding into Austin, Texas, and Ahmedabad, India. Our clients stay with us an average of five years.

Our headquarters is in the DUMBO neighborhood of Brooklyn, New York (18 Bridge Street, Suite 4A). We also have offices in Austin, Texas (3205 Industrial Terrace, Suite 100) and Ahmedabad, India. We serve clients across the United States remotely and in person.

Yes. We have led the finance workstream on multiple successful exits and growth investments, including Ray Enterprises (acquired by Amazon), Respire Medical (acquired by Whole You and Mitsui Chemicals), and Silverline (growth investment from Pamlico Capital). We recommend engaging a CAS partner six to twelve months before diligence begins so we can run pre-diligence: cleaning up the chart of accounts, building the data room, organizing contracts and IP, and preparing financial statements that will withstand outside scrutiny.

A traditional CPA firm typically focuses on tax preparation and annual audits. A CAS partner runs your day-to-day finance function: bookkeeping, monthly close, financial reporting, and strategic advisory. The two roles are complementary. Your CPA handles the tax return; your CAS partner handles everything upstream that produces clean numbers for that return. Most of our clients keep their existing CPA and engage us for the finance operations.

Most businesses see the most value from a CAS engagement at three inflection points. First, when the founder has been doing the books and can no longer keep up (typically around $500K to $2M in revenue). Second, when an in-house bookkeeper has been outgrown and reports are late, unclear, or wrong. Third, when an acquisition or growth investment is on the horizon and the finances need to be transaction-ready. Businesses roughly in the $500K to $50M range typically see the strongest fit.