PPC forecasting: how to project month-end spend, conversions and pipeline, and which forecasting tool to use
PPC forecasting means three different forecasts: where this month’s spend and conversions will land, what next month or quarter will deliver at a given budget, and how much pipeline the spend will create. Forecast month-end spend from the run rate, adjusted for schedules and changes; forecast next period with Google’s Performance Planner or your own history; and forecast pipeline by multiplying forecast conversions through your CRM conversion rates, with the lag of your sales cycle. Most teams forecast only spend. For B2B, the pipeline forecast is the one leadership acts on.
Key takeaways
Which PPC forecasts does a B2B team need?
A forecast answers a question someone will act on. Paid media teams get asked three different questions, and each needs its own method.
| Forecast | Question it answers | Who acts on it | Method |
|---|---|---|---|
| In-month spend and conversions | Where will this month land? | Paid media team, finance | Run rate to date, schedule-aware, with a range |
| Next period at a budget | What will next month or quarter deliver if we spend X? | Marketing leadership | Performance Planner, or your own history by campaign |
| Pipeline from spend | How many opportunities and how much pipeline will this spend create? | CMO, CRO, CFO | Forecast conversions x CRM stage rates x deal size, with lag |
The in-month forecast is covered step by step in our article on how to forecast month-end ad spend. This guide focuses on the other two and on how the three connect.
How do Google’s forecasting tools work?
Performance Planner lets you build spend plans and see how budget or bid changes might affect key metrics. It forecasts monthly and quarterly performance for Search, Shopping (standard), Performance Max, Demand Gen and App campaigns. Since March 9, 2026, Display and Video campaigns and impression share plans are no longer supported. Forecasts refresh daily, simulate ad auctions over the last 7 to 10 days and adjust for seasonality. Campaigns need recent data to qualify: for Search, Shopping and Performance Max, no bid strategy change in the last 10 days, at least 3 clicks, 10 impressions and 1 conversion, and spend in the last 17 days.
The budget report gives a monthly forecast of cost with a confidence interval, the cost to date and the monthly spending limit for campaigns on average daily budgets. It does not cover Performance Max and does not reflect ad schedules.
Both forecast Google Ads only, and both stop at platform conversions. Neither knows which conversions became opportunities.
How do you turn a spend forecast into a pipeline forecast?
Multiply forecast conversions through the stage rates in your CRM, by channel, and spread the result over your sales cycle. The stage rates come from lifecycle stages on contacts (lead, MQL, SQL, opportunity) for leads created in the same channel over the last two to four quarters.
A worked example with example inputs: Google Ads search is forecast to spend US$52,000 this month at a forecast cost per lead of US$400, so 130 leads. From the CRM, 30% of search leads become SQLs and 40% of those become opportunities: 130 x 0.30 x 0.40 = about 16 opportunities. At a US$60,000 average deal size, that is about US$936,000 of pipeline, or 18 times spend. Most of it will appear 30 to 90 days after the leads, so report it against the month the leads were created.
Do the same for LinkedIn and Microsoft Ads with their own rates. Blended rates hide the point: a channel with cheap leads and a low SQL rate can forecast more leads and less pipeline than an expensive one.
Bring your funnel numbers to a 30-minute pipeline plan session. We show where spend is leaking against your CRM data and what to fix first.
Which PPC forecasting tool fits which job?
There is no single forecasting tool that does all three jobs well. Match the tool to the question.
| Tool | Best for | Limits |
|---|---|---|
| Google Ads budget report | A quick month-end cost forecast for one Google Ads campaign | No Performance Max, no ad schedules, Google only |
| Google Performance Planner | Next month or quarter at a different budget, across Google campaigns and accounts | Google only; needs stable recent data; platform conversions only |
| Spreadsheet | A few campaigns, with your own CRM rates added by hand | Someone must refresh it; formulas break when budgets change mid-month |
| Pacing tool | In-month spend and conversion forecasts across platforms, every day | Next-period scenario planning varies by tool |
| CRM reports | Pipeline by source after the fact | Lags by the sales cycle; not a forward forecast without stage rates |
What makes a PPC forecast trustworthy?
- It states its inputs: the period, the run-rate window and any budget changes assumed.
- It respects schedules and flight dates, so weekday-only campaigns are not forecast on weekends.
- It shows a range, not just a point, especially early in the month.
- It uses CRM stage rates by channel for the pipeline forecast, with the date range they came from.
- It is compared with the actual result every month, so you know how far to trust it next time.
When is a spreadsheet enough?
If you run fewer than about ten campaigns on one or two platforms and budgets rarely change mid-month, a spreadsheet with spend pulled every morning and your CRM stage rates in a side table is enough. Our free budget pacing sheet template includes the month-end forecast formulas. Add Performance Planner once a quarter for planning.
Where Pacing Console fits
Pacing Console pulls Google Ads and Microsoft Ads spend every hour through a script that runs in your own account, or daily when you connect by sign-in; LinkedIn Ads connects with LinkedIn sign-in and syncs daily, with Sync now any time. Its month-end forecast projects spend, conversions and cost per conversion for every campaign, platform and the whole account from the run rate, schedule-aware, on every plan. The Forecast page on Pro adds a burn-up chart and a range based on the last seven days.
On Pro, CRM lifecycle stages by campaign show leads, MQLs, SQLs and opportunities next to spend; on Enterprise, pipeline and revenue by campaign complete the pipeline forecast. For a ranked comparison, see the best ad spend forecasting tools.
Frequently asked questions
What is PPC forecasting?
Projecting spend, conversions and outcomes for paid search and social campaigns. For B2B it covers three forecasts: where this month lands, what the next period delivers at a budget, and how much pipeline the spend creates.
What is the best PPC forecasting tool?
It depends on the question. Google’s Performance Planner is built for next-period plans on Google Ads; the budget report gives a quick monthly cost forecast; a pacing tool forecasts month-end spend and conversions across platforms every day; the CRM supplies the stage rates for pipeline.
How accurate is Google Performance Planner?
Google says forecasts simulate auctions over the last 7 to 10 days, adjust for seasonality and are checked against actual performance, but it publishes no accuracy figure. In volatile markets Google suggests planning weekly rather than monthly or quarterly.
How do I forecast pipeline from ad spend?
Forecast conversions from spend and cost per conversion, then multiply by your CRM’s lead-to-SQL and SQL-to-opportunity rates for that channel and by your average deal size. Report it against the month the leads were created, because opportunities follow with your sales cycle.
Sources
Related service: Paid media. See also pricing and client results.
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