Sales Tax for M&A and Growth Strategy Advisors

A success fee tied to closing a transaction is treated the same as any other advisory fee for sales tax purposes: exempt in most states, regardless of size, since the state looks at what the fee was paid for, advisory and deal work, not how the fee was calculated. Monthly retainers and hourly time carry the same treatment. A large, deal-contingent fee does not raise sales tax exposure just because of its size, which is a common and understandable but incorrect assumption among firms new to this question.

A firm that has built a proprietary diligence checklist platform, a valuation benchmarking tool, or a diagnostic assessment and now licenses it to other advisors, private equity firms, or corporate development teams separately from live deal work has created a product, and that product is taxed on a different basis than the deal advisory fees sitting next to it. This is common enough in the M&A world that it is worth checking even for firms that consider themselves purely advisory, since these tools often start as an internal efficiency project before someone decides to license them out.

If your firm bills a diligence platform or benchmarking tool through a subscription system like Stripe Billing, separate from deal advisory retainers and success fees, Anrok applies SaaS-style taxability logic to that specific revenue and tracks nexus as it grows, while your core advisory billing continues to be treated as exempt without any change.

A larger M&A advisory firm running multiple entities, international deal work with VAT exposure alongside US sales tax questions, or a licensed tool sold at real scale to outside firms tends to fit Avalara's broader coverage and ERP integrations as the finance function grows past what a single-purpose subscription tool handles.

Burn multiple guidance suggests a ratio under 1x is considered good for companies at $25 million to $75 million in ARR¹, a useful reference point for any advisory firm that has built a software product and is now managing its growth the way a software company would, alongside its core deal advisory business.

Before your firm licenses a diligence tool, benchmarking platform, or diagnostic assessment to outside firms for the first time, confirm which states tax SaaS or digital products and decide upfront how the tool's revenue will be tracked separately from deal advisory fees. Firms that build this separation in from the first licensing contract avoid the more painful version of this problem, which is discovering years later that licensing revenue has grown into a real number that was never reviewed for tax purposes at all.

• Retainers, hourly fees, and success fees tied to a closed deal: exempt in most states, regardless of fee size
• Licensed diligence, benchmarking, or diagnostic tools sold to outside firms: taxable where the state taxes SaaS
• Reimbursed deal expenses passed through at cost: typically exempt if documented as a pass-through

The most common path into this problem is not a firm deciding to launch a software product, it is an internal diligence checklist or benchmarking spreadsheet built for the firm's own deal team that a client or partner firm later asks to license directly. Because the tool never went through a formal product launch, nobody runs the tax question at the point it actually starts mattering, and the licensing revenue can grow for a year or two before anyone connects it to a sales tax obligation.

The fix is procedural, not technical: treat the first external licensing agreement, however small, as the trigger to check taxability, rather than waiting until the revenue is large enough to be noticed on its own.