How to cut CAC in 30 days

A week-by-week action plan to shrink Customer Acquisition Cost without stalling growth.

Why CAC Matters

When CAC drops while revenue holds—or rises—you unlock budget to scale ads, experiment faster, and out-bid competitors. The sweet spot: LTV : CAC ≥ 3 : 1.

Week 1 – Audit & Baseline

Task	Tool	Outcome
Pull 90-day spend vs-new-customer report	GA4 → Explore > Path	True CAC baseline (by channel & campaign)
Tag “wasted” campaigns (CPA > 120 % of avg.)	Google/META naming	Kill or pause under-performers
Check tracking hygiene (UTM, pixel)	GTM, Pixel Helper	No data gaps → clean comparison next month

Week 2 – Quick Wins in Paid Media

1. Match ad intent to landing copy – 1 keyword = 1 promise on the page.

2. Add negative keywords & placement exclusions – expect 8-12 % spend reduction.

3. Switch bidding to target-CPA once conversion count > 30/week; test –15 % tCPA.

4. Move 10 % budget to high-ROAS creative (use dynamic product ads or Advantage+).

Week 3 – Funnel & CRO Blitz

Page	Quick A/B Test	Typical Impact
Landing hero	Button colour bordeaux vs grey	+4-6 % CTR
Form	Remove 2 non-essential fields	–18 % drop-off
Checkout	Trust badge vs none	+3-5 % conversion

• Add exit-intent pop-up with 5 % voucher = captures abandoning users into email flow.

• Enable GA4 scroll & click events → reveals friction zones for next tests.

Week 4 – Automation & Retargeting

• Build 3-step email sequence (welcome, case study, limited-time offer) in HubSpot; aim for 25 % open / 4 % click.

• Create high-intent retargeting pool (visits > 2, time > 60 s, add-to-cart) with 7-day window—cheaper CPM, better relevance.

• Rule-based budget re-allocation: daily script shifts spend from CPA-outlier ad sets to top quartile.

KPI Dashboard (Looker Studio)

• Top row: CAC, LTV : CAC, ROAS, Net New $.

• Channel tabs: paid search, paid social, organic, referrals.

• Threshold colouring: green ≤ target, amber ≤ 110 %, red > 110 %.

Expected Results

Metric	Baseline	Day 30 target
CAC (blended)	€92	€70 (-24 %)
ROAS	3.1	3.6
Wasted ad spend	22 %	<10 %

Consistency wins: repeat the 4-week loop each quarter, stack micro-wins, and your CAC stays lean.

Next Step

Want the full 90-day GROW playbook? → Book a free strategy call and get a personalised forecast.

(Feel free to copy this article into your Wix Blog; add in-line images or GIFs of GA4 reports for extra punch. Alt-text for hero: “Graph showing CAC falling while ROI rises”.)