Marketing Budget 2027: Build It Bottom-Up From Pipeline

TL;DR

Build the 2027 marketing budget backwards from the revenue you need: target revenue, then deals, then sales-qualified leads (SQLs), then marketing-qualified leads (MQLs), then the spend per channel needed to produce them. Use a percentage of revenue only as a ceiling to sanity-check the result. Keep a test reserve, write kill rules for each channel, and release money by quarter against gates. The worked example below uses illustrative numbers that you replace with your own funnel data.

A budget that cannot be traced to a pipeline target is a guess that finance will cut. The method below gives you a number you can defend line by line, and a list of what to cut first when someone pushes back.

For the channel-level view of paid search, see how much to spend on Google Ads per month.

Why percent of revenue is a ceiling, not a plan

A common starting point is to set the marketing budget as a share of revenue. The most cited benchmark is Gartner’s annual CMO Spend Survey. Its 2026 edition, run from January to March 2026 among 401 marketing leaders in North America, the UK and Europe, reports marketing budgets at 7.8% of company revenue, up from 7.7% in 2025. Most of its respondents work at companies with more than $1 billion in annual revenue (Gartner press release, 11 May 2026).

That is useful as context, but it is a poor planning tool for most businesses:

• The sample is large companies. A company with a very different size, growth stage or margin has no reason to land on the same ratio.
• It says nothing about results. The same percentage can fund a plan that works or one that does not.
• Definitions differ. Surveys differ in what counts as marketing spend (people, agencies, tools, events), so figures from different surveys are not comparable.

Use the percentage in step four, as a check on the total.

Step 1: start from the 2027 revenue and pipeline target

Write down, for the part of revenue that marketing influences:

• New revenue target for 2027 (for a SaaS business, new annual recurring revenue).
• Average deal size (average contract value).
• Share of new deals that marketing sources, as opposed to sales outreach, partners or referrals. Be honest here: an inflated share inflates the budget.

Divide the revenue target by deal size to get the number of deals. Multiply by marketing’s share to get deals marketing must source.

Step 2: work back through win rate and conversion

Take deals from the previous step and work backwards using your own conversion rates:

1. Closed deals needed divided by the SQL-to-win rate gives the SQLs needed.
2. SQLs needed divided by the MQL-to-SQL rate gives the MQLs needed.

If you do not have clean rates, use the last two to four quarters and note the uncertainty. Do not use someone else’s conversion rates as if they were yours: the point of the exercise is that the number comes from your funnel.

Step 3: price each channel with cost per qualified lead

Split the MQLs you need across channels, then multiply each channel’s share by its cost per MQL. For each channel, take its cost per qualified lead from your own history. For a channel you have never run, treat the cost as unknown and place it in the test reserve instead of the core plan.

The cost per lead differs sharply by channel and market, so do not copy a figure from a benchmark page. For paid search, build the number from clicks, conversion rate and cost per click; see SEM forecasting.

Step 4: sanity-check the total

Add the program spend to the other lines that belong in the budget: tools, reporting, content production and, if you want the all-in figure, people and agencies. Then compare the all-in total with a percentage-of-revenue range, such as the 7.8% in Gartner’s 2026 survey, as a ceiling.

If your bottom-up number is far above the ceiling, check the assumptions (a low win rate, an optimistic target) before asking for money. If it is far below, check that you have not left out a cost.

Step 5: reserve a test budget and set kill rules

Unplanned ideas arrive during the year. Hold back part of the program budget for tests, so that new ideas do not raid the core plan. The share is a judgement call; in the example below we assume 10% of program spend, which is an assumption and not a rule.

Write kill rules before you spend:

• What you are testing and the single metric that decides it.
• The spend and the time window, for example a fixed amount over six weeks.
• The threshold to scale or stop, in cost per qualified lead.

A kill rule written in advance is easier to apply than a decision made after money has gone.

Quarterly release gates and re-forecast triggers

Do not release the full-year budget in January. Release it by quarter against gates:

• Gate metrics: cost per MQL, MQL-to-SQL rate and pipeline created against plan.
• Re-forecast triggers: a channel more than 25% off its target cost for two consecutive months, a change in deal size or win rate, or a change in the revenue target. The 25% threshold is an example; set your own.

Quarterly gates also make it easier to shift money from a weak channel to a strong one without reopening the whole budget.

Worked example (illustrative numbers)

This example is for an imaginary B2B SaaS company. Every number is an assumption for the purpose of showing the arithmetic. Replace them with your own.

Inputs

• New ARR target for 2027: $1,200,000
• Average contract value: $12,000, so 100 new deals
• Marketing-sourced share of new deals: 60%, so 60 deals
• SQL-to-win rate: 25%, so 240 SQLs needed (60 / 0.25)
• MQL-to-SQL rate: 20%, so 1,200 MQLs needed (240 / 0.20)

Channel plan

Channel	Share of MQLs	MQLs	Assumed cost per MQL	Spend
Paid search	35%	420	$90	$37,800
Paid social	15%	180	$110	$19,800
Content and SEO	25%	300	$40	$12,000
Email and lifecycle	10%	120	$25	$3,000
Events and partners	15%	180	$120	$21,600
Program subtotal	100%	1,200		$94,200
Tools and reporting				$12,000
Test reserve (10% of program)				$9,420
Total				$115,620

Reading the result

• Marketing is asked to source 60 deals worth $720,000 of new ARR (60 × $12,000).
• The total of $115,620 divided by 60 deals is about $1,927 of marketing spend per marketing-sourced deal, before people costs.
• Ceiling check: if the company’s revenue were $4,000,000, 7.8% would be $312,000. A program of $115,620 sits well inside that ceiling. Add salaries and agency fees to compare like with like.

What to cut first when finance pushes back

1. The test reserve’s lowest-conviction ideas, because they have no proven return.
2. The channel with the highest assumed cost per MQL and the weakest history (events, in this example).
3. Spend that duplicates another channel’s audience.
4. Only then the channels with proven cost per MQL, because cutting them cuts pipeline directly.

Cut by tracing each line to the MQLs it produces, not by a flat percentage.

Frequently asked questions

What percentage of revenue should a B2B company spend on marketing? There is no single right figure. Gartner’s 2026 survey of large-company marketing leaders reports 7.8% of company revenue across respondents, but the sample skews to very large firms. Use a percentage as a ceiling for the total, not as the plan.

How do I build a marketing budget from the pipeline? Start with the revenue target, divide by deal size, apply marketing’s share, then work back through win rate and MQL conversion to find the leads you need, and price them per channel. The worked example above shows each step.

How much of the budget should be reserved for testing? It is a judgement call. The example assumes 10% of program spend. Make it large enough to try real ideas and small enough that the core plan is safe.

When should the budget be re-forecast? When a channel misses its target cost for several consecutive months, when deal size or win rate changes, or when the revenue target changes. Review at least quarterly.

What do I cut first when finance pushes back? Cut the lowest-evidence items first: untested ideas, the highest-cost channel with the weakest history, and duplicated spend. Avoid flat cuts that remove proven pipeline.

Want a second opinion on your 2027 budget?

Our fractional CMO team can review the funnel assumptions and the channel plan, and tell you where the budget is soft. See the fractional CMO service or book a budget review call. For related reading, compare fractional CMO vs a marketing agency and the true cost of an in-house team vs an agency. Older guides: SaaS marketing budget and B2B SaaS budget planning tips.