📊 Ad Budget Allocator
Enter your total marketing budget, then split it across channels by percentage.
How the split is calculated
Each row is one multiplication, and the tool checks the percentages against 100:
channel amount = total budget × channel percent / 100
warning if |sum of percents - 100| > 0.01The four default channels against a $10,000 budget come out like this:
| Channel | Percent | Amount |
|---|---|---|
| Google Ads | 40% | $4,000.00 |
| Social Media | 30% | $3,000.00 |
| 15% | $1,500.00 | |
| Content / SEO | 15% | $1,500.00 |
Rename any row, change a percentage, remove a channel or add one. If the column totals 95% the tool still shows the amounts, but flags that $500 is unallocated.
Choosing the percentages
- Work backwards from measured cost per acquisition. If search brings customers at $80 and display at $260, the split should say so.
- Keep a testing slice, often 10% to 20%, for channels you have no data on yet. Without it the allocation only ever reinforces what you already run.
- Add creative production, agency fees and tooling as their own rows if they come out of the same pot. Otherwise the dollar figures are media cost only and the real budget is already spent.
Frequently asked questions
How should I split a marketing budget across channels?
Start from what each channel already costs you per customer rather than from a template. Where you have no history, the common starting point is roughly 70% on what demonstrably works, 20% on promising channels and 10% on experiments.
What happens if my percentages do not add up to 100?
The amounts still calculate, and a warning shows the true total. At 95% you are leaving 5% of the budget unassigned; above 100% you have committed more than you have.
How much should a small business spend on marketing?
A common benchmark is 5% to 10% of revenue for an established business and more for one trying to grow quickly. Decide that number first, then use this page to divide it.