The standard answer is wrong
The most common answer to this question is some version of when things get complicated. When revenue hits a certain level. When you hire employees. When you are thinking about expansion. This answer is understandable but it is wrong, and following it costs business owners money they never recover.
The right time to engage a business advisor is before you make the decisions that determine your trajectory — not after you have made them and are living with the consequences.
Before you choose your business structure
The decision between a sole proprietorship, LLC, S-Corp, C-Corp, and various partnership structures has tax, legal, and operational implications that compound over years. Most new business owners make this decision based on whatever their state's filing website makes easiest, or based on advice from someone who is not a financial professional. Getting the structure right at the start costs almost nothing. Restructuring later — after you have built the business on the wrong foundation — costs time, money, and in some cases creates tax events that are painful and unavoidable.
Before you sign your first major contract
Whether it is a commercial lease, a partnership agreement, a vendor contract, or a client contract with unusual terms, the time to review the financial implications is before you sign — not after. A business advisor does not replace a lawyer for contract review. But they can model the financial implications of what you are agreeing to. A five-year lease at a rent that is 40 percent of your current revenue looks very different if your revenue is growing than if it is flat.
Before you hire your first employee
The decision to hire your first W-2 employee changes your business fundamentally. It creates payroll tax obligations, unemployment insurance requirements, workers' compensation requirements, and in most states additional regulatory compliance. It also changes your cash flow profile. Having a business advisor walk through the financial model of your first hire — including what revenue you need to sustain it, what the all-in cost is, and how it affects your tax position — before you make the offer is far less expensive than discovering the answers afterward.
Before you take on debt or investment
Whether you are considering a business loan, a line of credit, an investor, or a partner who is bringing capital, the financial and structural implications of taking on external money require careful analysis. What is the true cost of the capital? What obligations does it create? What does it do to your equity? What happens if the business underperforms? These are not questions to answer after the term sheet is signed.
The accumulation problem
Every year a business operates without advisory guidance is a year of decisions that accumulate without a strategic framework. Some of those decisions are reversible. Many are not. By the time a business owner feels the need for an advisor — when revenue is high enough to justify it, when the complexity is undeniable — they are also carrying the weight of years of structural decisions made without guidance. Starting earlier means fewer things to unwind.
When it is never too late
None of this means that engaging an advisor late is not worthwhile. Businesses restructure. Tax positions get cleaned up. Strategies get recalibrated. The work is harder and sometimes more expensive when starting from a complicated baseline, but it is almost always valuable. The point is not that you missed your window — the point is that the window has always been open and the best time to walk through it is now.