How to set an advertising budget is one of the most common questions new marketing clients ask - and the most honestly complicated to answer. The internet will tell you "7-8% of gross revenue" (the SBA guideline, designed for B2C businesses trying to maintain existing market share). It will also tell you "2-5% for B2B" and "10-20% for growth-stage companies." All of these are correct for someone. The question is: which framework fits your situation?

At TTGC, Mherie approaches advertising budget-setting as a function of three variables: your growth ambition (maintain vs. grow vs. aggressively expand), your customer economics (lifetime value, average transaction, and margin), and your current channel efficiency (what is your CAC today, and what ROAS do you need to be profitable at that CAC). The percentage frameworks are guardrails, not gospel.

Once your budget is set, accurate measurement of where that budget goes and what it returns is essential. See how to measure paid ads performance for the metric framework, and how to track marketing ROI for the full-funnel view.

The Percentage Frameworks by Industry

For Lawyers and Professional Service Firms: A Case Study in Budget Logic

A personal injury law firm with $2M in annual revenue and an average case value of $35,000 has fundamentally different budget math than a $2M SaaS company with $5,000 ARR contracts. The law firm needs far fewer clients to sustain revenue - which means its CPL can be higher and it can afford to be more selective about channels. A $120,000 annual advertising budget (6% of revenue) on Google Ads, targeting personal injury keywords in a single metro, is not only defensible but likely to generate 3-4x ROI at standard industry conversion rates. Compare this to a SaaS company at the same revenue level, where 15% ($300,000) into paid channels with a 12-month sales cycle requires a much longer attribution window to justify.

Channel Allocation: How to Distribute Your Budget

A common allocation framework for service businesses is the 70/20/10 rule: 70% of budget to proven, revenue-generating channels (whatever is working now); 20% to growth channels (emerging platforms, new targeting strategies, new ad formats); 10% to experiments (new creative approaches, untested audiences, creative A/B tests). This prevents the common mistake of splitting budget equally across 5 channels and getting meaningful data from none of them. Scale what works; fund experiments separately.

"Budget without a CAC target is just spending. Budget with a CAC target is investing. Know the number you're buying clients at before you decide how much to spend." - Mherie, TTGC

Adjusting Budget for Growth Stage

Maintenance-mode businesses (established, profitable, not aggressively expanding) should sit at the lower end of their industry percentage range. Growth-mode businesses (new market entry, launching a new service line, recovering lost market share) should push toward the upper end or exceed it temporarily. Aggressive-expansion businesses (funded, land-grab mindset, willing to trade short-term profitability for market position) should think in absolute CAC targets relative to LTV rather than percentage-of-revenue frameworks entirely. The percentage model assumes stable conditions; growth is not a stable condition.

TTGC's Budget-Setting Engagement

TTGC helps clients set advertising budgets that are grounded in their actual customer economics, not industry averages. Mherie builds the financial model that connects budget to CAC to growth targets; Ravve's team builds the channel infrastructure that makes the budget efficient from day one. If you want a budget recommendation backed by your own numbers - not a rule of thumb - start with our growth assessment.