Is my cost per customer going up?

Bottomline tracks your cost per acquisition across all channels and shows whether efficiency is improving or declining month over month.

Is the quality of my leads declining even if volume is fine?

Bottomline cross-references your CRM pipeline with actual closed revenue to show whether lead quality is holding steady or dropping.

Is my CAC good or bad relative to my market?

Bottomline compares your customer acquisition cost against industry benchmarks to show whether you are efficient, average, or overpaying.

Which channel has the best ROI?

Bottomline cross-references your ad spend with actual revenue to show you true ROI by channel, not just what the ad platforms claim.

How many customers did I gain this month?

Bottomline counts new customers from your CRM and payment data and shows the trend month over month.

Am I getting better or worse at acquiring customers?

You are spending on ads, posting on social media, networking, asking for referrals. But is all that effort producing more customers per dollar than it did six months ago? Or less? Here's how to find out.

7 min read

The short answer

Is your acquisition getting better or worse? Track two numbers monthly: customer acquisition cost (CAC) and new customer count. If CAC is rising and new customers are flat or declining, you are getting worse. If CAC is falling or steady while new customers are growing, you are getting better.

Acquisition efficiency determines whether growth is sustainable

You grew revenue 15% this year. Great. But your marketing spend grew 35% to get there. You are spending at more than twice the rate of growth. If that continues, you will eventually spend more to acquire customers than those customers are worth.

Acquisition efficiency is not about spending less. It is about getting more per dollar spent. A business that acquires customers more efficiently over time has a compounding advantage: more customers, better margins, and more cash to reinvest in growth.

The tricky part is that most businesses never track this because the data lives in three different places: your ad platforms know what you spent, your CRM knows who became a customer, and your accounting software knows what they paid. Connecting those three is where the answer lives.

Two metrics that reveal your acquisition trend

Customer acquisition cost (CAC). Total marketing and sales spend / number of new customers acquired. Include ad spend, sales salaries, marketing software, and any other costs directly tied to getting customers. Track monthly and look at the 3-month trend.
New customer count. How many first-time paying customers did you add this month? Not leads. Not proposals sent. Customers who actually paid you money for the first time. This comes from your CRM or invoicing system.

How to track acquisition efficiency using QuickBooks and your CRM

1
Total your marketing and sales spend
In QuickBooks or Xero, go to Reports→ “Profit and Loss.” Add up all marketing, advertising, and sales-related expense categories. Include ad spend, marketing software, sales team salaries or commissions, and trade show costs.
2
Count new customers from your CRM or invoicing
In your CRM (HubSpot, Salesforce, etc.), filter contacts by “became a customer” date for the month. If you do not have a CRM, go to QuickBooks → Reports→ “Sales by Customer Summary” and identify which customers are new (first invoice this month).
3
Calculate CAC
Total marketing/sales spend / new customers = CAC. Example: $12,400 in marketing spend / 18 new customers = $689 per customer.
4
Compare to previous months
Record this number monthly. After 3 months, you have a trend. Is CAC going up, down, or holding steady? Are new customer counts growing in proportion to spend?

Total time: about 20-30 minutes per month. The hardest part is accurately counting new customers, especially if you do not have a CRM that clearly tags first-time buyers.

Why tracking acquisition efficiency is harder than it sounds

Your data is in three places. Spend is in accounting. Leads are in your CRM. Revenue is in invoicing. Connecting them requires manual cross-referencing every month.
Attribution is murky. Did that customer come from the Google ad, the email campaign, or the referral? For most small businesses, attribution is a best guess.
Seasonality clouds the trend. CAC might spike in January (more competition, holiday hangover) and drop in March (spring buying season). You need 6+ months of data to separate seasonal patterns from real efficiency changes.

Or track your acquisition efficiency automatically every month

Bottomline connects to your accounting software, CRM, and ad platforms and calculates your acquisition metrics automatically. It matches spend to actual new paying customers (not just leads) and shows you the trend:

Acquisition efficiency trend

January$72015 new

February$68518 new

March$64222 new

Improving: CAC dropped 11% over 3 months while new customer count grew 47%. Your acquisition engine is getting more efficient.

From a real Bottomline report. Acquisition efficiency tracked automatically by connecting your accounting, CRM, and ad data.

No more spreadsheets, no more cross-referencing. Bottomline shows you whether your customer acquisition is getting more efficient or less efficient, and which channels are driving the change.