Key takeaways
- Budgets follow goals and margins.
- Tier products by potential.
- Align budgets with inventory.
- Review and reallocate weekly.
Start with goals
Decide what advertising should achieve: launch visibility, defend share, grow sales or maximize profit. Each goal implies a different budget level and tolerance for efficiency. State the goal in measurable terms.
Know your margins
Calculate profit per unit before advertising and derive the break-even advertising level. A product with thin margins can support little advertising, while one with healthy margins may support more. Use this to set target ratios.
Set budgets by product tier
Allocate more to hero products with strong margins and conversion, a moderate amount to promising products and little to the weak ones. Review the tiers regularly.
- Hero products: scale carefully
- Growth products: test and learn
- Long tail: minimal spend
- Defensive: protect brand terms
Budgets for launches
New products often need higher spend relative to sales while they build reviews and data. Decide how much you can invest and for how long, with a limit and an exit criterion.
Daily and monthly budgets
Set daily campaign budgets that add up to your monthly plan, with buffer for high-demand days. Monitor for campaigns that run out of budget early in the day, which may indicate missed opportunities.
Link to inventory
Do not spend heavily on products that may run out of stock. Align budgets with inventory levels, and reduce spend when stock is tight.
Review and reallocate
Review performance weekly and move budget from underperforming campaigns to those with better returns. Keep changes measured.
A worked example
A seller with a limited monthly budget ranks products by margin and conversion. They put most spend behind two hero products, a smaller test budget behind a promising newcomer and pause low performers. After a month they compare results and adjust.
Budget planning checklist
Define goals, calculate break-even, tier products, set daily budgets, tie to inventory, schedule weekly reviews and record changes and reasons.
Questions to ask finance and operations
How much cash can we commit? Which products have stock to support more sales? What payback period is acceptable? Who approves changes? Agree these before spending.
Common budgeting scenarios
A new seller with limited cash should cap spend at a level that can be recovered if results are slow, and focus on one or two products. An established seller can allocate budget by product tier and shift it as data arrives. A seasonal seller should plan budgets ahead of the peak and avoid overspending on the days competition is highest unless margins support it.
In each case, record the assumption behind the number so that you can revisit it when conditions change.
Your next three steps
Turn the budget into a plan you can defend.
- Calculate profit per unit before advertising for each product.
- Place products into tiers and allocate budget by tier, not equally.
- Schedule a weekly review and a rule for moving spend between campaigns.
Key terms
A few terms used above, in plain language.
- Break-even ACoS: the advertising cost share at which a product earns no profit.
- Daily budget: the average amount a campaign may spend each day.
- Contribution margin: profit per unit after variable costs.
Frequently asked questions
How much should I spend on advertising?
It depends on margins, goals and stage. Start from break-even and test.
Should I spend the full budget every day?
Not necessarily. Spend should follow performance.
This guide is general information. Amazon's fees, policies and program rules change and vary by marketplace, so confirm current details in Seller Central and, for tax or legal questions, with a qualified adviser.