Quick answer
A marketing channel plan on a limited budget is a sequence, not a mix. Calculate what a customer is worth, pick one channel that matches where buyers are when they are ready to buy, fund it to the learning threshold, define one conversion event, and commit to a 60-to-90-day read window before changing anything. Three channels on $3,000 per month produces nothing. One channel on $3,000 per month produces a signal.
Most founders build a channel plan by listing the channels that competitors run and splitting the budget evenly across three or four of them. That is not a plan. It is a diluted version of what the competitor is doing, at a fraction of the budget, without the learning runway to find out which channel was actually working. After twenty years of watching budgets under $15,000 per month get spread this way, the pattern is unmistakable: the business that runs one channel to the learning threshold outperforms the business running four at a quarter of the scale, every time. The framework below is how to decide which single channel gets your budget first, and what to watch before you add a second.
What this guide covers
Before any channel decision, the number you need is the maximum you can afford to pay to acquire a customer. That is target CAC, and it is derived from contribution margin and customer lifetime value. If a customer is worth $600 in first-purchase contribution margin and repeats 1.8 times on average, LTV is roughly $1,080. A reasonable target CAC is a fraction of that, often one-third for businesses that need to fund operations from the first sale. Every channel conversation downstream is a comparison against this number. Without it, you are guessing whether a $45 cost per acquisition is good or catastrophic.
The channel decision is not a preference. It is a demand-state question. If people are typing your category into Google at volume, demand already exists and your first job is capturing it. Paid search comes first. If the category is new, if the purchase is impulse-driven, or if nobody is searching for the problem you solve, there is nothing to capture. Demand has to be created. Paid social comes first. The cost of getting this wrong is spending three months and $15,000 proving that nobody searches for your category on Google, or conversely, that paid social cannot create demand fast enough for a high-consideration B2B purchase.
Every paid channel has a learning threshold: the minimum weekly conversion volume required before the platform and you can distinguish signal from noise. For Google Ads and Meta, that threshold is typically 30 to 50 conversions per 30-day window per campaign. Below that, bid strategies cannot exit learning, and you cannot tell whether a week of poor results is a trend or a fluctuation. This is where small budgets fail. At $3,000 per month split across three channels, no single channel reaches the learning threshold. At $3,000 per month on one channel, the threshold is usually achievable. The math is brutal but clarifying: your budget sets the maximum number of channels you can credibly run.
Attribution is not a technology problem. It is a decision problem that gets dressed up as a technology problem. Before any tracking code is installed, you need to decide what you count as a conversion, what you count as a secondary event, and what attribution window matches your actual sales cycle. A 7-day click window on a 45-day B2B sales cycle will under-report paid search and over-credit retargeting. A Purchase event counted on the first visit will miss the return buyer who converts two weeks later. The tracking follows the decision, not the reverse. If you try to decide after looking at the data, the data will lead you somewhere convenient rather than somewhere true.
If you want the exact priority list for your specific account rather than the general framework, the Conversion Second Opinion delivers it in 72 hours.
A channel plan is built in a specific order, and reordering it is the most common way operators produce plans that do not survive contact with a live account. The sequence is: unit economics first, demand map second, channel choice third, budget allocation fourth, conversion definition fifth, read window last. If you pick the channel before the unit economics, you are matching a tool to a problem you have not defined. If you define the conversion event after the campaign launches, you will rebuild tracking three times in the first quarter. Each step constrains the next. Skipping one does not save time; it adds rework.
A second channel is earned, not added. The signal that you are ready is not "we have more cash now." The signal is that the first channel has reached diminishing returns at your target CPA, or that it has saturated the addressable audience inside your budget, or that the first channel is producing leads the second channel will close faster. Most businesses add a second channel too early, split attention, and watch the first channel regress while the second one never gets to learning threshold. A $15,000 per month account can often support two channels. A $3,000 per month account almost never can. The rule: the first channel must be profitable and stable for 90 consecutive days before a second one gets funded.
Should I start with SEO or paid?
Start with paid if you need revenue inside 90 days. Paid captures existing demand immediately. SEO produces a return over 9 to 18 months but compounds afterwards. Most operators run paid first to fund the business, then reinvest a portion of revenue into SEO as a second channel once paid has proven the unit economics.
What is the minimum budget to run Google Ads?
For most B2C and service categories, the floor is around $3,000 per month in ad spend. Below that, the account collects too few conversions per week to exit the learning phase on any bid strategy. Some niche local categories work at $1,500. High-CPC verticals like legal or home services start at $5,000.
How long before I know a channel is working?
A fair read on a paid channel needs 30 to 50 conversions in a 30-day window. At a 2 percent conversion rate and a $3 click, that is roughly 6 weeks of $3,000 per month in spend. SEO needs 6 to 9 months for a fair read. Organic social needs 90 days of consistent publishing before the engagement signal is real.
Can I run paid social without paid search?
Yes, if your category has no existing search demand. New product categories, discovery-driven goods, and impulse purchases often start on paid social because there is nothing to capture on paid search. If people are typing your category into Google at volume, paid search comes first and paid social comes second.
When should I hire a marketing consultant instead?
When the cost of a wrong channel decision exceeds the cost of an outside read. For most businesses spending over $5,000 per month in marketing, that threshold is already crossed. A consultant is not for the first $500 of spend. It is for the next $50,000, when the channel decision compounds either into a revenue line or into a deficit.
A channel plan is not a spreadsheet of percentages allocated across platforms. It is a sequence of decisions that binds unit economics to a single channel, a single conversion event, and a single read window. Operators who get this right stop thinking about marketing as a portfolio of bets and start thinking about it as a structured test with a pre-committed decision point. That is the difference between spending $10,000 per month and knowing what it produced, and spending $10,000 per month and having three plausible explanations for why nothing worked.
If you want to go deeper into the frameworks and use them as you build, the other marketing strategy guides cover attribution decisions, channel sequencing, and when to add a second channel. The broader set of marketing guides includes pillars on Google Ads, Shopify marketing, and agency management, which are the operational layers that sit underneath a channel plan once it is chosen.
If the channel question is bigger than a plan, and what you actually need is strategic direction on the whole system rather than a framework to apply yourself, marketing strategy consulting is the engagement that produces the plan for your specific situation. The diagnostic reads your unit economics, your demand state, your current channel mix, and returns the sequence that applies to your business, not the general one.
The full build engagement
$5,000. One engagement. Diagnosis, build, and fix. No retainer after.
See the Revenue Sprint