Tool

Campaign Budget Allocator

Enter your total campaign budget and goal, set channel performance data, and get an AI-weighted allocation across channels with rationale. Free marketing budget tool, no signup required.

Most marketing budgets are allocated by habit rather than strategy. Last year's split becomes this year's starting point, adjusted at the margins for whatever channel had a good quarter. The result is a budget that reflects history rather than opportunity, and channels that are either over-funded relative to their return or starved of the investment they need to scale.

A proper budget allocation should start with your goal, not your history. Brand awareness campaigns should weight channels differently than direct response campaigns. A retention budget should look nothing like an acquisition budget. The channel that generates the most revenue is not necessarily the channel that deserves the most investment next quarter.

This tool takes your total budget, your campaign objective, and your channel performance data and calculates a goal-weighted allocation across all active channels. The model scores each channel on three dimensions, historical ROAS, cost efficiency, and strategic priority, then weights those scores differently depending on your stated objective. The result is a defensible, goal-aligned allocation with a plain-English rationale you can take into a budget review.

Campaign setup
Total campaign budget
$
Campaign duration
Industry benchmark CPA
$
Primary campaign goal
Channel performance data
Channel
Hist. ROAS
Avg. CPA ($)
Priority (1-10)
Active
Recommended allocation
Total budget
$25,000
over 3 months
Active channels
6
receiving budget
Projected CPA
$38
weighted average
Est. conversions
658
based on CPA inputs
Channel
Allocation
Monthly spend
Share of budget
Allocation rationale

Methodology

The allocation model scores each channel across three dimensions: historical ROAS, cost per acquisition efficiency, and strategic priority. Each dimension is weighted differently depending on the campaign goal selected.

For brand awareness campaigns, strategic priority carries sixty percent of the weighting, with ROAS and CPA efficiency at twenty percent each. Awareness investment is less directly measurable by ROAS and should be allocated to channels with the greatest reach and relevance to target audiences.

For lead generation, cost efficiency carries fifty percent of the weighting, ROAS thirty percent, and priority twenty percent. Lead gen budgets should ruthlessly favour channels that deliver qualified leads at the lowest cost.

For direct sales campaigns, ROAS carries fifty percent, efficiency forty percent, and priority ten percent. Sales campaigns should concentrate spend in the highest-returning channels.

For retention campaigns, cost efficiency carries sixty percent of the weighting. Retention spend should prioritise the most cost-effective ways to maintain and grow existing customer relationships.

How to use this tool

  1. Enter your total campaign budget and duration
  2. Select your primary campaign goal from the four options
  3. Set historical ROAS, average CPA, and strategic priority for each channel
  4. Toggle channels on or off to include or exclude them from the allocation
  5. Review the recommended allocation and rationale, then download as CSV

Frequently asked questions

How should I decide which channels to include in my budget allocation?
Include every channel that is currently active or that you are seriously considering activating. Channels you are testing should be included with conservative priority scores. Channels you are planning to wind down should be deactivated in the tool so the budget redistributes to more productive channels. The goal is to allocate the full budget across channels that are actually going to receive it.
What is ROAS and how does it affect budget allocation?
ROAS stands for return on ad spend and is calculated by dividing revenue generated by ad spend. A ROAS of 4x means every dollar of ad spend generates four dollars in revenue. In this tool, historical ROAS is one of three factors that determine how much budget each channel receives. Channels with higher historical ROAS receive more budget in sales-oriented campaigns.
Why does the allocation change when I switch campaign goals?
Because different goals require different channel behaviours. A brand awareness campaign needs reach and frequency, which favours channels with broad audiences regardless of immediate conversion efficiency. A direct sales campaign needs channels that convert quickly and at measurable ROAS. The tool changes the weighting of each scoring dimension to reflect these different strategic requirements.
How often should I reallocate my marketing budget?
For most businesses, monthly reallocation is appropriate for tactical digital channels where performance data updates frequently. Quarterly reallocation is more appropriate for channels with longer feedback loops, such as brand advertising or content. Annual budget planning should set directional allocations, with monthly and quarterly reviews making tactical adjustments based on performance data.
What should I do if a high-priority channel has poor historical ROAS?
First, assess whether the ROAS measurement is capturing the full value of the channel. A channel that drives top-of-funnel awareness may show poor direct ROAS while contributing significantly to the pipeline in attribution models that credit early touchpoints. If the ROAS is genuinely poor and the channel is strategically important, it may need investment to test and optimise before it earns a larger allocation.

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