Quick answer: Set a B2B PPC budget in five steps. Take revenue, apply the 8% to 11% marketing benchmark, give paid media about 25% to 35% of that, split it by funnel stage, divide the monthly figure by 30.4 for the daily budget, then check pace weekly. Setup takes about 30 minutes and the weekly check about 10.
Most B2B marketing teams can tell you their total ad spend for the quarter. Far fewer can tell you how that number was set, how it is paced week to week, or what happens when a campaign starts outperforming its allocation. A PPC budget is not just a cap on spend. It is a working framework that ties spend to pipeline goals, protects the account from mid-month overspend, and gives you a clear signal for when to shift budget between campaigns.
This guide walks through that framework step by step, with the exact formulas, a worked example, a tested pacing script and a downloadable tracker. By the end you will have a top-line number, a split by funnel stage, a daily budget per campaign and a weekly pacing routine, so you are not discovering a budget problem on day 28.
Before you start
- Numbers you need: last full year of revenue (or your approved marketing budget), and the qualified-lead count per campaign from your CRM.
- Access: your Google Ads account (or the ad platform you use) and its spend report. Steps 3 and 4 use Google Ads Help on average daily budgets.
- Tools: a spreadsheet (use the free pacing tracker below) or Python 3 for the optional script.
- Time and level: about 30 minutes to set up, 10 minutes a week to run. Beginner to intermediate.
- What you will have at the end: a monthly budget, a funnel split, daily budgets, a pacing routine and a rule for moving money.
Step 1: Set the Top-Line Number Before You Touch a Campaign
Open a spreadsheet and write three numbers: annual revenue, the share of revenue your company puts into marketing, and the share of that marketing budget that goes to paid media. Do this before you open an ad account, so the budget comes from the business plan and not from last year’s spend.
Industry benchmarks give you a starting point. According to HubSpot’s marketing budget research, B2B companies typically allocate between 8% and 11% of revenue to marketing, while its industry table puts tech software and platform companies at 9.16%.
Within that marketing budget, paid media is usually one of the largest lines. Directive’s B2B budget benchmarks list paid media at 25% to 35% of the marketing budget and put the average at 30.6% (2025, citing Gartner research). Directive itself says these are directional ranges, not precise targets, and so do we. The two sources also differ on the base: Directive’s summary puts typical B2B marketing investment at 7.7% to 8% of revenue, a little under HubSpot’s 8% to 11%, so use the range as a starting point and check it against your own plan.
Multiply it out. Revenue times the marketing share gives the marketing budget. That times the paid media share gives the annual PPC budget. Divide by 12 for the monthly figure.
Quick math for a top-line PPC number
If your company has annual revenue of 10,000,000 and allocates 9% to marketing (900,000), and paid media takes 30% of that marketing budget, your annual PPC budget is 270,000, or 22,500 per month before you split it across campaigns. These are illustrative numbers, not a recommendation.
How to check it worked: your monthly figure should sit between 25% and 35% of monthly marketing spend. If it does not, you either have an unusual cost structure or a typo. Common mistake: using last year’s ad spend as the starting point, which bakes in last year’s waste. A company in a land-grab growth phase with strong unit economics can lean toward the higher end. A company optimizing for efficiency, or selling into a long sales cycle, should lean lower and put more weight on organic and lifecycle channels.
One more sanity check before you move on: what does a click actually cost in your category? Google Ads keyword data for six common B2B terms shows top-of-page bids from single digits up to the 80s in US currency units, and average CPCs from about 39 to 85 for these terms.
Step 2: Allocate the Budget Across Campaigns by Funnel Stage and Intent
Once you have a top-line number, decide how to split it. Most B2B accounts do better when budget is allocated deliberately by funnel stage rather than divided evenly across every campaign that exists. The table below is our starting template. These ranges are MV3 working ranges, not a published benchmark, so adjust them to your own data.
| Campaign type | Starting share | Primary goal | Example share of 22,500 | Per month |
|---|---|---|---|---|
| High-intent search (branded and bottom-funnel keywords) | 40% to 50% | Pipeline and demo requests | 45% | 10,125 |
| Mid-funnel search (category and comparison keywords) | 20% to 30% | Qualified leads, content downloads | 25% | 5,625 |
| Retargeting and account-based display | 10% to 15% | Nurture and re-engagement | 15% | 3,375 |
| Testing and new campaign experiments | 10% to 15% | New keyword and audience discovery | 15% | 3,375 |
| Total | 100% | 22,500 |
The example column adds up: 45 + 25 + 15 + 15 = 100, and 10,125 + 5,625 + 3,375 + 3,375 = 22,500. A team just starting paid search with no branded search volume yet will lean more heavily into mid-funnel and testing budget until enough data exists to justify concentrating spend on proven, high-intent campaigns.
Then ask what each share can buy. If the whole 22,500 went to one keyword at its average CPC, the number of clicks would range from 266 to 582 across the six B2B terms below. A split budget buys fewer clicks per keyword, which is why the testing share should stay small and why keyword choice matters as much as the percentage.
How to check it worked: the shares add to 100% and every campaign has a goal you can measure in your CRM. Common mistake: leaving the testing share at zero, so the account never finds the next high-intent campaign.
Step 3: Set Daily Budgets That Actually Match Your Monthly Number
A surprising number of accounts drift from their intended monthly budget simply because daily budgets were never recalculated against it. In Google Ads, the average daily budget is the average amount you are comfortable spending each day over the course of the month. Google says it optimizes spend toward days when you are more likely to get clicks and conversions, so on some days you will not reach the average and on others you will exceed it.
Google also states the limits: you will never pay more than two times your average daily budget on any particular day, or 30.4 times your average daily budget in any particular month, for most campaigns. To convert, divide the monthly amount by 30.4, the average number of days in a month. Google Ads Help shows the same division in its own example.
For the worked example, 22,500 divided by 30.4 is 740.13, so you enter 740 as the average daily budget. Split by campaign, the daily budgets are 333 for high-intent search, 185 for mid-funnel search, 111 for retargeting and 111 for testing, which add back to 740. Enter these in each campaign’s budget setting.
How to check it worked: the sum of all campaign daily budgets times 30.4 should land near your monthly number. Common mistake: dividing by 30 or 31 and then forgetting to recalculate when the monthly number changes. Recalculate the daily target every time the monthly budget moves.
Step 4: Build a Pacing Check Into Your Weekly Routine
Budget management fails most often not at the planning stage but at the monitoring stage. Because a single day can legitimately run up to twice the average, judge pace on month-to-date spend, never on one day. Compare what you have spent with what a straight-line plan says you should have spent by now.
Simple weekly pacing formula
Expected spend to date = Monthly budget × (Days elapsed ÷ Total days in month). If actual spend is more than 10% to 15% above or below that number, adjust bids, budgets or targeting before the gap compounds. This guide uses 15% as the band.
The chart is an illustrative month. On day 18 the plan says 13,500 (22,500 times 18 divided by 30) and actual spend is 16,200, which is 20% over. The fix is arithmetic: the remaining budget is 22,500 minus 16,200 = 6,300, spread across the 12 days left gives 525 a day, down from 740. Google backs the reset rule: after you change a budget, spend for the rest of the month cannot exceed the new average daily budget times the remaining calendar days. Here is the same logic as a script you can run on your own numbers.
def pacing_check(monthly_budget, spent_to_date, day, days_in_month=30, tolerance=0.15):
"""Compare month-to-date spend with the straight-line pace and suggest a new daily budget."""
expected = monthly_budget * day / days_in_month
variance = spent_to_date / expected - 1
if abs(variance) <= tolerance:
status = "on pace"
else:
status = "over pace" if variance > 0 else "under pace"
days_left = days_in_month - day
new_daily = (monthly_budget - spent_to_date) / days_left if days_left else 0.0
return {"expected": round(expected, 2), "variance_pct": round(variance * 100, 1),
"status": status, "new_daily_spend": round(new_daily, 2)}
if __name__ == "__main__":
print(pacing_check(22500, 16200, 18))
# Output when run on the day 18 numbers:
# {'expected': 13500.0, 'variance_pct': 20.0, 'status': 'over pace', 'new_daily_spend': 525.0}What this does: it returns the expected spend, the variance, a status and the daily spend needed to finish the month on budget. Running it on the day 18 numbers prints the line shown in the comment, and the assertions in our test file (over pace at +20%, on pace at +11.4%, under pace, last day, and the 22,500 / 30.4 rounding to 740) all pass.
Common error: passing a day count that includes today’s unfinished spend. Use yesterday’s date and yesterday’s cumulative total for a clean read.
Prefer a spreadsheet? Download the PPC budget pacing tracker (CSV). Enter the monthly budget, days in month and tolerance at the top, then type each day’s cumulative spend. The sheet returns variance, status and the daily budget needed to finish. Its formulas work in Google Sheets and Excel. Google Ads also has a budget report with a monthly forecast of projected spend for campaigns that use average daily budgets, which is a useful cross-check on your own pace line.
When a campaign is pacing well under budget, resist the instinct to simply raise the daily cap. Look first at whether the account is limited by search volume, keyword targeting, bids or an ad approval problem. When it is pacing over, decide deliberately whether the extra spend is earning enough pipeline to justify pulling budget from a slower campaign, rather than letting the month run out early.
Step 5: Reallocate Based on Cost Per Qualified Lead, Not Just Cost Per Click
The most common budget management mistake in B2B accounts is optimizing toward the metric that is easiest to see, cost per click or cost per conversion, rather than cost per qualified lead or cost per opportunity. Pull the qualified-lead count per campaign from your CRM once a month and divide each campaign’s spend by it.
In the illustration, Campaign A pays 6 per click and Campaign B pays 14, but with 5% click-to-lead and 10% lead-to-qualified rates, A costs 6 / 0.05 / 0.10 = 1,200 per qualified lead, against 14 / 0.08 / 0.30 = 583 for B. The rates are assumptions to show the method. Before shifting budget toward a “winning” campaign, confirm the win shows up downstream in your CRM, not just in the ads platform, and move budget in steps of 10% to 20% so you can see the effect.
Troubleshooting: what to do when the numbers look wrong
| Symptom | Likely cause | Fix |
|---|---|---|
| One campaign spends close to double its daily budget on a single day | Google can spend up to two times the average daily budget on a given day | Judge pace on month-to-date spend, not single days |
| Month total lands above plan although daily budgets looked right | Daily budgets were divided by 30 or 31, or one campaign was missed in the sum | Use 30.4 and sum every campaign’s daily budget |
| Spend is more than 15% under pace mid-month | Search volume ceiling, narrow targeting, low bids or disapproved ads | Check ad status and targeting first; do not just raise the daily cap |
| Spend is more than 15% over pace early in the month | New campaign ramp-up or a bid strategy change | Recalculate: (monthly budget minus spent) divided by days left |
| Cheap clicks but no pipeline | Optimizing for cost per click | Rank campaigns by cost per qualified lead from the CRM |
Checklist recap
- Revenue x marketing share x paid share = annual PPC budget; divide by 12.
- Split by funnel stage; keep a testing share; the shares add to 100%.
- Daily budget = monthly amount / 30.4, per campaign.
- Weekly: month-to-date vs expected pace; act when outside the band.
- Monthly: rank campaigns by cost per qualified lead and move budget in small steps.
Download the pacing tracker (CSV) and keep it next to your ad account.
When to Bring in Outside Help
A budget framework only works if the account underneath it is built well. If your team spends more time debating the spreadsheet than improving campaigns, pair this framework with a PPC management partner or review your campaign management structure. Our SEO services team can align paid and organic around one keyword map, and you can book a call to talk it through.
Frequently Asked Questions
How much should a B2B company spend on PPC?
Published benchmarks put paid media at roughly 25% to 35% of the marketing budget, and marketing at roughly 8% to 11% of revenue for B2B. Growth-stage companies with strong unit economics tend to sit at the higher end. Treat these as directional ranges, not targets.
How often should I check PPC budget pacing?
At minimum, weekly. Comparing month-to-date spend with the share of the month elapsed catches drift early enough to adjust before month end.
Should I set budget by campaign or by account?
Both. Set a top-line account budget first, then allocate it across campaigns by funnel stage so high-intent campaigns are not competing with early-stage testing campaigns.
What should I do if a campaign is pacing over budget?
Check whether the extra spend is producing qualified pipeline, not just clicks. If it is, move budget from a slower campaign. If it is not, lower the daily budget to the remaining budget divided by the days left.
How do I turn a monthly PPC budget into a daily budget in Google Ads?
Divide the monthly amount by 30.4, the average number of days in a month, as Google Ads Help does in its own example. For most campaigns Google will not charge more than 30.4 times the average daily budget in a month or two times it on any one day.
Sources
- HubSpot, marketing budget as a percentage of revenue (read 2026-10-09)
- Directive, B2B marketing budget benchmarks for 2026 (read 2026-10-09)
- Google Ads Help, About average daily budgets (read 2026-10-09)
- DataForSEO Google Ads keyword data, United States, pulled 2026-10-09 (bids, CPC and search volume charts)
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Vance Moore is Chief Growth Officer at MV3 Marketing and leads its team of SEO professionals, engineers and auditors.
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