Ad Budget Calculator for B2B Services & Consulting

B2B services live in a weird middle ground: deal sizes ($10k-$250k) justify expensive clicks, but buyers take 30-120 days to sign and rarely convert from a single touch. You're not running ads to close deals — you're running ads to fill a pipeline that humans close.

The math here is unlike any other business type. An ecommerce store optimizes for a 3-day attribution window. You're optimizing for a sales cycle that may not close until Q4. That changes everything about what you measure and how you set budgets.

What buyers actually do on your ads. They click a Google Search ad at 11pm researching vendors, never fill out the form, and show up six weeks later via a referral or a podcast mention. Last-click attribution will tell you Google didn't work. It did. This is why most B2B services firms underspend on paid — their tracking lies to them.

2025 CPC and CPL ranges to plan against:

• Google Search, high-intent terms (fractional CFO, B2B SaaS PR agency): $15-$60 CPC, CPL $150-$450
• Google Search, broader category terms: $8-$25 CPC, CPL $200-$700 (lots of tire-kickers)
• LinkedIn Sponsored Content with Lead Gen Forms: CPL $120-$350 for clear ICPs, $400+ if targeting is sloppy
• LinkedIn Conversation/Message Ads: $0.30-$1.20 per send, booked-call rates 1-3%
• Meta retargeting only: CPL $40-$120 from warm audiences
• Meta cold to B2B audiences: usually a waste below $15k ACV

The channel mix that actually works. For most B2B services firms, Google Search captures the 5% of your market that's actively shopping, and LinkedIn captures the 95% that isn't. Run both. Google alone leaves you fighting over the same 200 monthly searches as every competitor. LinkedIn alone leaves you with no harvesting layer when buyers raise their hand.

Minimum viable budget. Below $3k/month, pick one channel — usually Google Search on 5-10 named-intent keywords. Between $3k-$10k, run Google + LinkedIn retargeting. Above $10k, add LinkedIn cold prospecting against named accounts or precise titles. Above $25k, layer in 6sense/Demandbase or a cold outbound team — paid ads alone hit diminishing returns fast in B2B because the addressable audience is small.

The single biggest mistake. Treating B2B services ads like lead-gen for SaaS. SaaS can run a $50 ebook offer to a top-of-funnel audience and convert 2% to trials within 14 days. You can't. A whitepaper download from a $200 LinkedIn lead is worth almost nothing if nobody calls them within 4 hours and qualifies them properly. Paid ads in B2B services fail 80% of the time not because the ads are bad — they fail because the sales follow-up is bad. Before you spend a dollar on traffic, make sure someone is on the hook to call inbound leads same-day.

KPIs that matter, in order: cost-per-booked-call > cost-per-SQL > cost-per-signed-client > LTV/CAC ratio. CPL is a vanity metric here. A $120 LinkedIn lead that books a call beats a $40 Meta lead that ghosts. Track booked-call rate by source in your CRM, not your ad platform.

Attribution window settings. Set Google Ads to a 90-day click window and 1-day view. Set LinkedIn to 90-day click. The default 30/7 window will systematically underreport your performance and convince you to cut campaigns that are working.

Example

A $15k/month boutique RevOps consultancy with $80k average contracts: $5k to Google Search on 12 named-intent keywords (HubSpot implementation partner, Salesforce RevOps consultant), $7k to LinkedIn targeting VP Sales/RevOps titles at 200-1000 employee SaaS companies, $2k LinkedIn retargeting, $1k Meta retargeting. Expect 8-15 booked calls/month, 2-4 closed deals over a rolling 90-day window.

Questions