Are Google's defaults bleeding your budget dry?

Practically, £300–£600/month ($10–$20/day) is the floor at which campaigns generate statistically meaningful data within 30 days. Google's technical minimum is $1/day, but at that level you generate too few clicks to evaluate targeting, too few conversions to train Smart Bidding, and too little data to make informed optimisations. In competitive verticals (legal, insurance, SaaS) the practical minimum rises to £50–£100/day because CPCs average £5–£15 and you need sufficient volume to isolate signal from noise. The Small Budget Survival Audit calculates the realistic minimum for your specific industry and geography based on category CPC benchmarks.

Practitioner consensus on Reddit r/PPC places 'low budget' at £5,000–£10,000/month and 'tiny budget' below £5,000 — the distinction matters because tiny budgets operate under different physics than low budgets. Under £5K/month, Smart Bidding's conversion volume requirements (30–50/month) cannot be met in most verticals, so the platform's automation features actively work against you. This requires stripping away automation and reverting to Manual CPC or Maximise Clicks with strict bid caps. The Small Budget Survival Audit diagnoses which tier your budget falls into and recommends the bidding strategy appropriate for your specific conversion volume.

Manual CPC or Enhanced CPC for accounts generating fewer than 30 conversions per month — Smart Bidding requires that conversion volume to identify patterns, and below the threshold the algorithm makes erratic bid adjustments based on too-sparse data. Maximise Conversions (without a target) is a safer middle ground than Target CPA when you have 15–30 conversions per month — it doesn't try to hit a specific efficiency target. Move to Target CPA or Target ROAS only after 30+ monthly conversions for 3 consecutive months. The Small Budget Survival Audit recommends the bidding strategy based on your actual conversion volume and flags when you've crossed the threshold to upgrade.

Three rules: (1) one campaign, one ad group, 5–10 Exact match keywords maximum — spreading £300/month across multiple campaigns means none of them accumulates data; (2) Manual CPC with bid caps 30–40% below the category average so you can afford 300+ clicks/month to gather signal; (3) add aggressive ad-schedule restrictions to run only during your highest-intent hours based on your website's analytics, not Google's recommendations. At $10/day you cannot afford exploration — every click must be on deliberately chosen high-intent traffic. The Small Budget Survival Audit produces the specific ad schedule, keyword list, and bid cap for a $10/day account in your industry.

Bid on high-commercial-intent queries only — specifically terms containing 'near me', '[location]', 'buy', 'hire', 'price', 'cost', 'quote' — and exclude everything informational with aggressive negative lists ('how to', 'what is', 'free', 'tutorial', 'DIY'). Push call extensions heavily if you're in a service vertical — phone call conversions typically convert 2–3x better than form fills and don't require nurture. Use landing pages that match query intent precisely, not homepages. The Small Budget Survival Audit identifies your highest-intent converting query themes and produces a tight keyword list plus negative list calibrated for quality over quantity.

One tightly-scoped ad group is almost always better for a local service under £1,500/month — three ad groups fragment the small budget and none of them accumulates the 15+ conversions needed for the campaign to exit learning. The exception is when your service lines have fundamentally different search intent (e.g., 'emergency plumber' vs 'bathroom installation'), in which case two ad groups are justified. Add ad-group-level negative keywords between them to prevent query leakage. The Small Budget Survival Audit reviews your ad group structure and consolidates where fragmentation is hurting learning.

For a first-time campaign with $1,000 spread across 30–60 days, 5 leads is below average but not disastrous — Google Ads typically takes 60–90 days to stabilise once Smart Bidding has enough data, and $1,000 rarely provides enough conversions for that stabilisation. The bigger question is lead quality: if those 5 leads closed into customers at a decent rate, the CPA is £200 per customer which may be viable. If they didn't close, the issue is targeting not budget. Before spending another £1,000, diagnose whether your first £1,000 failed on traffic quality, landing page conversion rate, or lead-to-customer close rate. The Small Budget Survival Audit runs this diagnosis on your first $1K of spend and pinpoints which stage of the funnel is breaking.

Not stupid, but usually counterproductive — fragmenting a small budget across 5+ ad groups means each ad group generates 2–5 conversions per month, which is below every reasonable statistical threshold for optimisation. The exception is when your ad groups genuinely target different search intents and each one can sustain itself on the budget share. At under £2,000/month, 1–2 ad groups is almost always better than 5. At £2,000–£5,000/month, 2–4 is sustainable. The Small Budget Survival Audit flags over-fragmented accounts and recommends consolidation with the specific ad-group merge plan.

Realistic in specific conditions and unrealistic in others. Viable: local services with phone-call conversion, B2C products with £20+ AOV, niche B2B with high LTV (£5,000+ customer value) where 1–2 conversions/month justifies the spend. Unviable: high-AOV ecommerce against enterprise competitors, low-margin products in saturated categories (dropshipping, generic apparel), B2B SaaS in verticals with £30+ CPCs. The question is not 'can it work' but 'can it work in your specific vertical'. The Small Budget Survival Audit evaluates your specific combination of industry, AOV, and margin to produce a realistic viability assessment.

Under £1,500/month rarely works for ecommerce against serious competitors because Shopping CPCs compound with conversion rate to produce CPAs above typical AOV margins. Under £5,000/month works if you operate in a defensible niche, have AOV above £60, have margins above 40%, and have tight feed hygiene. The right approach is Standard Shopping (not PMax) with a Top-Sellers-only product filter, avoiding the algorithmic concentration PMax imposes on limited budgets. The Small Budget Survival Audit evaluates whether ecommerce viability holds for your specific margin, AOV, and category and recommends Standard vs PMax structure.

Effective Budget is your nominal daily budget minus the spend going to zero-conversion queries, irrelevant placements, and off-peak hours — it's the share of spend genuinely competing for converting traffic. A £50/day budget with a 30% waste rate has an Effective Budget of £35/day. For small accounts this matters enormously because the gap between nominal and effective budget can be the difference between generating enough conversions for Smart Bidding to work and not. The Small Budget Survival Audit calculates your current Effective Budget and identifies the specific changes that would increase it without increasing total spend.

Check whether the issue is bid, budget, or demand first. If Search Impression Share Lost to Rank is above 50%, your bids are too low for the auction and you need to increase them. If Lost to Budget is above 20%, raise daily budget (or lower bids to spread spend across more auctions). If both are low and you're still under-spending, the keywords have insufficient search volume — expand keyword list or broaden match types cautiously. At $5/day, broadening match types risks uncontrolled spend, so prefer keyword expansion. The Small Budget Survival Audit diagnoses which of the three causes applies to your account.

The Survival Score is a 0–100 diagnostic measuring how efficiently a small account operates given its budget constraints. It combines three factors: waste ratio (what share of spend goes to non-converting traffic), match type discipline (what percentage of spend is in Exact or Phrase match versus Broad), and conversion data density (whether the account has enough conversions for bidding to function). Below 40 means the account is burning most of its budget without building algorithmic learning; above 70 means it's operating efficiently for its size. The Small Budget Survival Audit calculates your Survival Score and itemises the specific changes needed to raise it.