Paid acquisition
Turn paid on only with a written payback rule, and read the cost of the last unit of spend, not the average. Start with the traffic you have already earned: your own brand, your best pages and posts that worked.
11 steps, about 62 hours of work · 8 plays · 2 checked claims
Paid acquisition for a SaaS works when every dollar is held to a payback rule written before the first one is spent. That means tracking where signups come from first, starting with the cheapest warm audiences (your own brand, competitor terms, retargeting), and raising budget in steps while watching what the last dollar bought.
The concept, explained in full: Performance marketing.
Do it
Every step in the free launch plan that this topic needs, in the order you need them. Each keeps its plan number.
- What has to be in place before you spend anything?5 steps
- Where should the first ad dollars go?7 steps
- How do you scale spend without losing money?3 steps
What has to be in place before you spend anything?
Without attribution, a paid channel takes credit for signups it did not cause.
4.1.2UTM every outbound link you control
Use the convention you wrote in Phase 0. Untagged links become “direct” and hide your winner.
30m
4.1.3Store first-touch and last-touch on the user record
First touch tells you what to invest in; last touch tells you what to fix.
Done when: Quote the two column names that hold first-touch and last-touch on the user record, and the values stored for one real signup.
2h
4.1.1Add “how did you hear about us?” to signup
A free-text box beats any tracking script for dark-social discovery. Read every answer.
Done when: Open the signup form. It carries a free-text field asking how the person heard about you. The URL of the form is the evidence.
1hguide
4.1.5Build a weekly channel report you will actually read
Five rows: channel, signups, cost, CAC, trend. Anything longer gets skipped by week three.
Done when: Quote the last weekly channel report: one row per channel with its signups for the week. Every channel has a number, zero included.
2h
6.3.1Compute CAC payback and write the rule
One sentence that decides every future spend, before you spend anything.
Done when: Quote the payback rule: the maximum months to recover CAC, and the date of the monthly review. A number of months and a date.
2hguide
Where should the first ad dollars go?
Warm, self-selected audiences first. Cold prospecting comes last.
6.3.2Defend your branded search
Cheap, high-converting, and it stops competitors buying the traffic you earned.
8hcosts money
6.3.3Bid on competitor and alternative keywords
Point them at the alternative pages you built in Phase 2, not at the homepage.
10hcosts moneyhow to do it
6.3.4Retarget readers of your best pages
Warm, self-selected, and vastly cheaper than cold prospecting.
10hcosts moneyhow to do it
6.3.6Boost the organic posts that already worked
The cheapest paid social there is, because the creative is pre-validated — as evidence, not as a guarantee. A post the feed carried to the right people can still fail cold against an audience the platform picks for you. On TikTok the mechanism is a Spark Ad: the creator generates a code on their own post and it runs as it is, under their name.
4hcosts moneyhow to do it
6.3.10Put an attribution partner in before the first paid installmobile app
Each ad network counts its own installs, and on iOS they arrive late and coarse. A mobile measurement partner is the one ledger that de-duplicates them across networks — without it the payback rule is reading the vendors’ own scorecards. Free plans exclude paid campaigns, so budget it with the ads.
4hcosts money
How do you scale spend without losing money?
A campaign that pays back at £100 a day is a different campaign at £1,000.
6.3.11Send every ad to a page whose first screen repeats its promise
The click came for one sentence. If the hero says something else, the ad has paid for a visitor the page then loses. Where several angles share one page, its first screen carries the promise they all make — and Google rates the same fit as landing page experience.
6.3.9Raise the budget in steps and re-read the payback at each one
A profitable campaign at £100 a day is not the same campaign at £1,000. Watch the cost of the LAST pound you spent, not the average — the average stays healthy long after the margin has gone. On Meta a big enough budget change restarts the learning phase, so read each level only from that edit, once it has about 50 conversions behind it.
1hcosts moneyevidence: strong
6.3.7Kill anything breaching the payback rule, monthly
Enforced without exceptions. This is the whole reason you wrote the rule down first.
1h
Plays
Reusable patterns that explain how: backed by read sources first, then practitioner advice, then our own ideas.
- Build the ad set from the complaints you counted, in their wordsBacked · 2 sources
Cold paid social works when the ad says what the buyer already said. Count the complaints and wants in three months of their own posts, turn the top three into angles, and write three hooks per angle in their exact phrases — nine creatives, one ad set per angle, one offer. Show the outcome they described, then pause any angle that breaks your payback rule.
- Boost the founder’s best post, not the brand’s adBacked · 1 source
Instead of launching brand creative, boost the founder’s best-performing organic post to a targeted ICP audience using thought-leader ad formats. The post already proved it earns attention; paid distribution extends a winner, and feeds treat a person’s words as content where they treat a logo’s words as interruption.
- Give every sponsored placement its own link and code before you pay for itBacked · 1 source
Before paying for a newsletter slot, a podcast read or a sponsored talk, give it its own tagged link and a spoken code, and ask at signup where people heard of you. Every placement then reports separately, and you decide whether to buy it again from signups it produced, written down before the money was spent.
- Search ads on "[competitor] alternative" keywordsOur idea
Run search ads against "[competitor] alternative" and "[competitor] vs [you]" keywords, landing on a fair comparison page rather than the homepage. The audience is small but perfect: they know the category, they’re dissatisfied, and they’re actively shopping for the switch — the highest-intent clicks money can buy.
- Retarget your readers with the magic moment, not a bannerOur idea
Retarget only people who already read your content or used your free tools, showing the product’s thirty-second magic moment rather than a brand banner. Warm-audience retargeting costs a fraction of cold acquisition, and pairing it with proof-of-value creative converts researchers into trials without a single cold impression.
- Sponsor three issues of the newsletter your buyers trustOur idea
Sponsor three consecutive issues of a niche newsletter your buyers genuinely read, with copy written in the letter’s own voice and a dedicated landing page. Niche newsletter attention is under-priced compared to social ads, the writer’s endorsement halo transfers, and three touches let a considered purchase actually land.
- Own the boring long-tail searches nobody bids onOur idea
Build exact-match campaigns on the boring, hyper-specific searches in your space — "[task] calculator", "[niche] template", "[format] checklist" — where competitors don’t bid and clicks cost cents. Searchers arrive mid-task with clear intent; land each keyword on a page that completes the task and introduces the product.
- Reddit ads aimed at exact subreddits, written like a redditorOur idea
Target Reddit ads at the specific subreddits your buyers inhabit, with plain-spoken, self-aware creative that respects the room — no stock photos, no marketing voice. Community targeting reaches niches other platforms can’t isolate, and the comment section under your ad, handled honestly, becomes free social proof.
What the evidence says
Sources
Founder questions
When should a SaaS start paid ads?
Once you know your conversion rate and what a customer is worth, so you can write a payback rule. Before that, ads mostly buy you data you could have had for free from organic channels.
Which paid channel should a SaaS try first?
Your own branded search, then competitor and alternative keywords pointed at comparison pages, then retargeting the readers of your best pages. All three reach people who already know the category.
What is a CAC payback rule?
One sentence that decides every spend: for example, a channel must earn back its cost per customer within a set number of months. Anything that breaks it is cut, every month, without exceptions.
Related topics
Go further
Where it sits in the plan
- 6.3Turn on paid, with a payback rulein Scale to $1M ARR
Sources
- David Skok, SaaS Metrics 2.0 (forEntrepreneurs)
- Andreessen Horowitz, 16 Startup Metrics (2015)
Compiled by The Marketinque Team to our editorial standards.