HomeFree ToolsMarketing Budget Calculator
Estimators & Pricing • Growth Planning
Marketing Budget & ROAS Calculator
Turn a monthly budget into channel-level projections: visits, leads, customers, blended CAC and return on ad spend — before you commit a dollar to ads.
Pick an industry preset or override every assumption yourself. Results are shown as ±30% planning bands, because single-point forecasts from a budget figure would be false precision.
Channel-Level Math
Google, Meta & SEO split.
ROAS & CAC Output
Margin sanity checks.
Industry Presets
CPC & conversion seeds.
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Model Your Marketing Budget
Set your monthly budget and channel mix, apply industry presets, and instantly see planning-band visits, leads, customers, CAC and ROAS.
Base ROAS 0.49× — below break-even
1,857
74
8 – 14
$625
$68
40/30/30
At this budget the projection sits below a 1× ROAS. Raise revenue per customer, improve conversion rates, or increase budget efficiency before scaling.
How Do You Plan a Marketing Budget That Actually Returns Money?
A workable marketing budget is modelled backwards from unit economics: decide what a customer is worth (revenue per customer × gross margin), set the maximum you can afford to spend to win one (target CAC), then split your monthly budget across channels so projected traffic × conversion rates deliver customers at or below that CAC. This calculator runs that chain — spend → visits → leads → customers → revenue — and surfaces ROAS, CAC and cost-per-lead instantly, with ±30% planning bands so you plan for a downside instead of a single fantasy number.
1. The Planning Model: Every Formula This Calculator Runs
There is no black box. The tool applies five transparent steps — the same ones a performance marketer runs on a spreadsheet — so you can check the math or rebuild it with your own numbers:
| Step | Formula | What It Tells You |
|---|---|---|
| Visits | channel spend ÷ cost per visit | Paid channels use your CPC; SEO uses a blended cost-per-visit proxy. |
| Leads | visits × visitor-to-lead rate | Form fills, sign-ups and enquiries generated across all channels. |
| Customers | leads × lead-to-customer rate | Deals actually closed from those leads in a month. |
| Revenue | customers × revenue per customer | Top-line value the budget is projected to produce. |
| ROAS / CAC | revenue ÷ budget · budget ÷ customers | Efficiency pair: return multiple and true cost of winning one customer. |
2. How Much Should Go to Paid vs Owned Channels?
Benchmarks vary widely by industry and margin, so treat these as starting postures rather than rules — then let your measured CAC decide the final split:
Lean paid-heavy (roughly 70/30) for the first 90 days: you need conversion data fast, and SEO compounds too slowly to be your only bet. Cap total spend at what you can run at a loss for one quarter.
A common working posture is close to an even split (about 50/50) between paid and SEO/content. Paid buys this quarter's pipeline; content lowers next quarter's blended CAC.
Mature sites with strong organic baselines often shift toward owned channels (60%+ SEO/content) and use paid mainly for retargeting and product launches, protecting margin as CPCs rise.
3. Reading the Outputs Without Fooling Yourself
- Sanity-check ROAS against margin first. A 1.4× ROAS is a disaster on 10% margin and healthy on 70% margin — compute 1 ÷ gross margin to find your break-even multiple before celebrating any number the tool shows.
- Treat the ±30% band as the real result. Optimise the system — creative, landing page, offer — to move the conversion inputs, rather than assuming the upper band is the plan.
- Compare channels on CAC, not clicks. The cheaper click often converts worse. Once real data arrives after 30–60 days, replace every preset with your own tracked numbers and re-run the model monthly.
- SEO is the compounding line. Its traffic keeps growing after spend pauses, unlike paid. Judge the SEO share on a 6–12 month horizon, not month one's projected visits.
Need This Projection Turned Into a Real Channel Plan?
Our performance team builds the channel mix, landing pages, tracking and creative for budgets like these — then optimises against real CAC and ROAS data, not projections.
HTTP Status & Redirect Chain Checker
Before spending on clicks, verify your campaign landing URLs resolve in a single hop — redirect chains leak paid traffic and Quality Score.
Check Campaign URLsMarketing Budget & ROAS FAQs
Practical answers on benchmark ranges, ROAS targets, CAC maths and how to use the projections honestly.
How does this marketing budget calculator work?
It runs a transparent planning chain: channel spend is divided by an effective cost-per-visit (your chosen CPC for paid channels, a blended planning proxy for SEO) to project visits. Visits multiplied by your visitor-to-lead rate gives leads; leads multiplied by your lead-to-customer rate gives customers. Customers multiplied by revenue per customer gives projected revenue, from which ROAS, CAC and cost-per-lead are derived. Every input is editable, and results are shown as ±30% planning bands because conversion performance varies with offer, season and creative.
How much should a small business spend on marketing?
Commonly cited benchmarks suggest 5–15% of gross revenue for established businesses, with early-stage companies often spending more to build demand — but budgets vary hugely by industry and margin. A practical approach: start with an amount you can invest for 3–6 months without panic, measure cost per acquisition against the lifetime value of a customer, and shift budget toward the channel with the best economics rather than chasing a benchmark percentage.
What is a good ROAS, and what ROAS should I target?
A 'good' ROAS depends entirely on gross margin. The floor rule of thumb is: minimum sustainable ROAS = 1 ÷ gross margin percentage. If your gross margin is 40%, you need at least 2.5× ROAS to break even on ad spend, and anything above that is contribution toward fixed costs. High-margin SaaS businesses can profit at 2–3×, while low-margin retail often needs 4–6×. Use the calculator to test what revenue each budget level must produce for your numbers to work.
Why does the tool show ranges instead of exact numbers?
Because exact single-point forecasts from a budget input would be false precision. Paid search CPCs, conversion rates and order values drift with seasonality, competition, creative fatigue and offer quality. We therefore project a base case and show a ±30% planning band around customers and revenue, so you plan for a downside, a base and an upside rather than a number that will not survive contact with reality.
Are the industry CPC and conversion presets accurate?
The presets are directional planning ranges seeded from commonly published industry benchmarks for Google Ads cost-per-click and typical ecommerce, SaaS and local-services conversion rates. They are deliberately conservative starting points, not guarantees — your actual CPC depends on Quality Score, geography, match types and auction competition. Replace them with numbers from your own Google Ads and Analytics accounts as soon as you have 30+ days of data.
Why model SEO as cost-per-visit instead of ranking positions?
Because rank projections from a budget figure alone would be guesswork. Instead we treat SEO and content spend as buying traffic at a blended effective cost per visit that is lower than paid CPC — a fair planning proxy that lets you compare channels on equal terms. In reality SEO compounds: spend the same budget for six months and sessions keep growing after spend stops, while paid visits stop the moment you pause campaigns. Treat SEO as an investment line, not just a monthly cost.
What is CAC, and why does it matter more than clicks?
CAC (Customer Acquisition Cost) is total channel spend divided by customers won. Clicks and leads are vanity metrics unless they convert at a price below what a customer is worth to you. The calculator surfaces CAC alongside ROAS so you can sanity-check each channel: if projected CAC exceeds the gross profit you earn per customer in a reasonable payback window, that channel will bleed cash at scale no matter how cheap the clicks are.
Can AnyPlace build and run this marketing plan for us?
Yes. Our performance marketing team builds channel plans, landing pages, tracking and creative from planning numbers like these, then optimises against real CAC and ROAS data — see Digital Marketing services or send us your calculator output through the contact form and we will respond with a channel-level plan for your budget.
Content last reviewed October 2026.
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