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Ad spend calculator

How much should you spend on ads, and where? Answer six questions and get a budget, a channel split, and a 6-month plan — built from published benchmarks, with the reasoning shown.

Start from:
Green light
$6,000 /month to start
Sensible range for your stage and appetite: $4,000$8,000/month

Your economics support paid acquisition. Start at $6,000/month, concentrated on 1 channel, and scale on evidence.

Your unit economics
Max customer acquisition costfully loaded, from payback norms for your deal size$8,000
Of which paid media~40% of CAC; the rest is people, tools, creative$3,200
Max cost per demo requestat a 8.4% cold-paid demo request → customer rate$269
What to expect at $6,000/month
Blended cost per demo request$96–$300
Demo requests per month20–63
New customers per month2–5
Implied paid CAC$1,143–$3,571

Ballparks from published, platform-attributed medians for cold traffic — channels running together will each claim some of the same conversions, so blended reality lands below the sum of dashboards. Your creative and offer move these numbers more than any budget decision. Treat months 1–2 as data collection, not verdicts.

Where the budget goes
Google$6,000/mo · 100%

Search captures existing demand — the highest-intent clicks you can buy. Split brand terms from non-brand and judge them separately; blended numbers flatter the account. Expect $96–$300 per demo request on non-brand.

LinkedInWorth testing later — at $6,000/month, spreading past 2 channels starves them all of signal.
RedditWorth testing later — at $6,000/month, spreading past 2 channels starves them all of signal.
X (Twitter)Worth testing later — at $6,000/month, spreading past 2 channels starves them all of signal.
MetaIts share of this budget would fall under the ~$2,500/month it needs to learn. Concentrate now, add it as budget grows.
Strategy mix
Prospecting / acquisition
92% · $5,500/mo

Cold audiences and non-brand search — where growth actually comes from. Retargeting closes; prospecting fills the room.

Retargeting
8% · $500/mo

Kept deliberately small: post-ATT, retargeting is the most over-attributed spend in the account, and broad/Advantage+ structures already reach warm audiences.

How to ramp over 6 months
Months 1–2
Validate
$3,600/mo
  • Start on Google only — nail tracking before scaling
  • Give brand terms their own campaign so cheap brand clicks don't flatter non-brand results
  • Test 3–5 creative angles per channel; kill losers weekly
  • Expect learning-phase costs to run 20–30% hot; judge nothing before week 3
Months 3–4
Scale what works
$6,000/mo
  • Shift budget to winning campaigns in ≤20% steps every 3–4 days — bigger jumps reset the learning phase
  • Layer in retargeting as pixel audiences build
  • Hold the line on your $269 per demo request target
Months 5–6
Expand
$8,100/mo
  • If unit economics hold, add LinkedIn as the next channel
  • Refresh creative before fatigue sets in — CTR decay is your early warning
  • Re-run this plan with your real numbers replacing the benchmarks

How the recommendation is calculated

Two independent floors decide whether an ad budget makes sense, and the calculator checks both. The finance floor: companies under $5M ARR typically put 8–15% of revenue into marketing, with paid media taking 20–40% of that. The data floor: platforms need conversion volume to optimize — Meta's system wants about 50 conversion events per ad set per week, Google's Smart Bidding wants 30+ conversions a month. For most early-stage companies the data floor binds first, which is why the calculator would rather cut a channel entirely than spread budget too thin to learn.

The channel split starts from what you can afford to pay. For B2B, your deal size sets a maximum customer acquisition cost via published payback norms (roughly 9-month payback under $5k ACV, stretching to 18–24 months for enterprise deals), paid media gets ~40% of that, and funnel benchmarks — demo-to-close rates by deal size, trial-to-paid rates from 86 SaaS companies — translate it into the cost per demo or trial you can support. That number gets compared against published cost-per-lead ranges for each platform. When LinkedIn's $100–300 demo-request CPL doesn't fit a $3k contract, LinkedIn is out, and the calculator tells you why. For B2C the same logic runs on first-order breakeven: average order value times contribution margin, against each platform's cost per purchase.

The output is a starting plan, not a guarantee — your creative and offer will move the numbers more than any allocation decision. Once you're live, reallocating across channels based on real data is the job, and Market Intelligence is how Adside keeps the market context in view while you do it.

The data behind it

Every constant in the calculator comes from a published source — benchmark studies, platform documentation, or large-sample survey data, gathered July 2026:

  • SaaS CapitalSpending Benchmarks for Private B2B SaaS Companies (2026)
  • Benchmarkit2025 B2B SaaS Performance Metrics Benchmarks (2025)
  • WordStream/LocaliQGoogle Ads Benchmarks 2025 (2025)
  • WordStream/LocaliQFacebook Ads Benchmarks 2025 (2025)
  • Triple WhaleFacebook Ads Benchmarks (~35,000 brands, full-year 2025) (2026)
  • Triple WhaleTikTok Ads Benchmarks (full-year 2025) (2026)
  • MetadataONEB2B Ad Benchmarks (64,000 creatives, Q1 2025–Q1 2026) (2026)
  • First Page SageSaaS Free Trial Conversion Rate Benchmarks (2025)
  • First Page SageB2B SaaS Funnel Conversion Benchmarks (2025)
  • Chili PiperForm Conversion Rate Benchmark Report (~4M submissions) (2025)
  • RevenueHeroThe State of Demo Conversion Rates (2025)
  • OptifaiDemo-to-close conversion rates (939 companies) (2026)
  • HockeyStack LabsMQL→SQL rates by paid channel (2024)
  • GrowthSpreeLinkedIn Ads vs Google Ads for B2B SaaS (2026)
  • PipeRocket DigitalGoogle Ads Benchmarks for B2B SaaS (first-party API data) (2026)
  • GartnerCMO Spend Survey 2025 (2025)
  • MetaAbout the learning phase (official) (2026)
  • MetaAbout budget minimums and cost-per-result goals (official) (2026)
  • GoogleAbout Target ROAS bidding — conversion thresholds (official) (2026)
  • LinkedInMaking the most of your budget (official) (2026)
  • TikTokBudget best practices (official) (2026)
  • StackmatixStartup ad budgets from seed to Series B (2026)

Ad budget questions, answered

Survey data puts marketing at 8–15% of revenue for companies under $5M ARR, with paid media typically 20–40% of that. In practice that means roughly $2,000–8,000/month under $1M ARR and $8,000–25,000/month at $1–5M ARR. But the harder floor is the data floor: your budget has to buy enough conversions for the platforms to optimize — around 50 events per week on Meta, 30+ per month on Google. If it can't, run fewer channels, not smaller budgets everywhere.

Platform minimums are tiny ($1–5/day) but meaningless. Meta's system wants ~50 conversion events per ad set per week to exit its learning phase, so the practical formula is 50 × your expected cost per conversion ÷ 7 per day. Google recommends judging Smart Bidding on 30+ conversions per month. Realistic starting points: $1,500–3,000/month on Google, $2,500+/month on Meta — concentrated in one campaign, not spread thin.

Google captures demand that already exists — people searching for a solution. Meta creates demand at scale. If people search for what you sell, start with Google and add Meta once search volume caps out. Ecommerce flips it: Meta (and TikTok) carry demand creation with 50–60% of budget while Google Shopping takes 25–35%. The calculator adjusts the split to your industry, deal size and conversion motion.

When deal size supports it. LinkedIn demo-request leads run $100–300, so at a $3k contract the math rarely works — practitioner consensus is that LinkedIn gets uneconomical below roughly $8–10k ACV. From $15k+ it's often the highest-quality channel because nothing else targets job titles reliably. Below that, use LinkedIn only for retargeting warm visitors, and let Google and Meta do the prospecting.

In steps, not jumps. On Meta, budget increases over ~20% reset the learning phase, so the standard play is +20% every 3–4 days — which still triples the budget within a month if performance holds. Add channels one at a time: master one, add a second when the first plateaus, and keep it to 3–5 channels total. $50k spread across 10 channels performs worse than $50k on 3.

Yes — the assumptions are published, sourced and listed at the bottom of this page: WordStream/LocaliQ and Triple Whale benchmark studies, First Page Sage funnel data, Benchmarkit CAC payback surveys, Chili Piper form-conversion data, and the platforms' own documentation for learning-phase and budget mechanics. They are medians, not guarantees; treat the output as a well-informed starting plan.

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A plan is the easy part. Running it is ours.

Adside plans, launches and optimizes campaigns across every channel in this split — and shifts budget toward what's working, automatically.

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