"It depends."
Ask five agencies what you should spend on marketing and you'll get five variations of this exact answer.
Next, you'll get a proposal that happens to match their minimum retainer.
So let's put some numbers to the actual situation with reasoning attached, so you can check them against your own business.
One promise you should consider as we look at these numbers: these are planning rates. They're not quotes.
Every number comes with logic shown, but your situation will require specific customization.
You've probably been burned by confident-sounding proposals before. What you should take away from this is the rationale behind the spend, so you can see how it was built and how it would apply to your business.
Start with the only formula that matters
A marketing budget shouldn't necessarily start with a percentage of revenue. Rather, focus on unit economics worked backwards.
- How much is a client worth to you in the first year versus lifetime?
- What is your close rate?
- What can a qualified conversion cost while leaving a healthy margin for your business?
For example, if your average client is worth $60K in the first year, and you close 1 in 3 qualified conversations, each qualified conversation is worth $20K in revenue.
Based on this math you can pay several thousand dollars for a qualified sales conversation.
If you haven't done this math, then it would be no surprise that a $200 cost per lead is scary to look at. But if the lead is qualified, $200 is far lower than the several-thousand mark that's allowable.
So, what's the math for your business?
The bands: what growth-mode firms actually commit
Across professional services and B2B marketing, growth investment is typically between 5% and 15% of revenue. Spend less, and it's spread too thin to generate learnings, optimizations, refinement, and growth. Data is inconclusive. Budget doesn't allow for creative refreshes. The channels cannot work together at the scale you need them to.
- Around $1M revenue: roughly up to $8K/month all-in. This is a one-channel budget, and that's its strength. One buyer, one message validated properly, one channel (usually search) run well. The goal is proving a repeatable cost per qualified conversation.
- Around $3M: roughly up to $25K/month. Set up a primary and secondary demand channel, such as LinkedIn or retargeting. Ads are professionally produced, and deliver critical messages that are optimized weekly based on campaign data.
- Around $10M: up to $80K/month. Run a multi-channel engine with awareness, conversion, closing, and success metrics defined and optimized. Run connected TV with continuously developed ad creative. Prove out performance by channel.
If those numbers feel more ambitious than you were expecting, stay focused on a budget that works for you. A focused $5K a month budget can do wonders for a campaign as a starting off point.
Where the first dollars go (not where you think)
If this excites you and you're ready to go, the instinct is to turn on ads as soon as you possibly can. But that's usually one of the last steps to deploy. The first is really understanding your customer, why they're buying from you, the transformation you develop for them, and the most resonant messages that are going to make them stop the scroll.
Your advertising, social media content posting, and cold reach-outs on LinkedIn or email are all natural and authentic expressions of the insight you have about your customer and the ways in which you help them. Where a lot of companies make a mistake is they go right to the ads with the most generic and commoditized message they have and they sound like everyone else. There's no way to distinguish them from any of their competitors, which means when they do eke out a call from Google search, they get price shoppers rather than people ready to buy at full price.
After determining the intricacies of your customers and the transformation you provide, the next step is doing message validation. Understand which images, headlines, solutions, and statements are the most interesting to your customer. This is a very inexpensive insurance against a lot of wasted advertising spend.
Skipping validation to "get leads faster" is how companies optimize ad settings for months while the real problem sits in the headline. It's the core of the strategy-before-spend sequence we lay out in the professional services marketing playbook.
The 90-day expectations curve: normal vs. red flag
Most marketing programs that fail are abandoned because expectations are not properly set.
- Days 1–30: spending without much to show. Normal: this is validation and calibration, and ad algorithms need to get out of learning stages. Red flag: no test structure and no hypothesis. Look for the ads that become top performers.
- Days 31–90: first real signal. Leads start arriving. The cost per lead is often ugly and improving. Normal: costs start trending down weekly as budget shifts to winners. Red flag: focusing on impressions and clicks and dodging the cost per lead question.
- Days 90–120: the decision window. By now you should see a stabilizing cost per lead and get qualified conversations. You can compare marketing performance. Normal: a clear keep/kill/scale recommendation. Red flag: a pitch to expand into new channels before the first one has proven anything.
Notice that profitability is not on the roadmap in month one. Anyone promising a switch to turn marketing spend into immediate profit is reading a script. Realistically, by 90 days you see the right momentum on your marketing spend. You have performance, the leads, and baseline data that trends the right direction. The goal is to turn prior haphazard marketing into a scalable dial you turn. If you've burned budget in the past all of this may be hard to believe, but that failure had a structure, and it wasn't you.
The cheapest way to get your actual numbers
Everything above is honest, but general. The version with your exact details, economics, customer insights, and channel plan costs $497. It's a Marketing Diagnostic that takes 14 days, deliberately priced so that you can get the most important starting point: a plan that lays out the exact strategy before anything is spent on ads.
And that's the big payoff. The budget conversation stops being an act of hope supported by good thoughts and crossed fingers. It becomes a decision you control monthly, which is how it should have felt all along.