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Average Revenue Per Account (ARPA)

Understand the Average Revenue Per Account (ARPA) Concept

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Average Revenue Per Account (ARPA)

In This Article
  • What does the average revenue per account (ARPA) measure?
  • What formula calculates the average revenue per account (ARPA)?
  • Why is the average revenue per account (ARPA) an important metric to track for SaaS companies?
  • How is the average revenue per account (ARPA) different from the average revenue per user (ARPU)?

Average Revenue Per Account (ARPA) Formula

ARPA, short for “average revenue per account,” refers to the subscription or contractually recurring revenue generated per account.

Like most SaaS KPIs, ARPA is one method for companies to develop a better sense of their customer base and how their spending reacts to specific changes.

Usually, ARPA is expressed on a monthly or annual basis and is calculated by dividing a company’s monthly recurring revenue (MRR) by the total number of active accounts.

ARPA Formula
  • ARPA = Monthly Recurring Revenue (MRR) / Total Number of Active Accounts

MRR can also replaced with annual recurring revenue (ARR) to annualize the metric.

The period chosen (i.e. monthly vs. annual) should depend on how the subscription businesses being assessed operate (monthly vs. longer-term contracts) and the purpose of the analysis (i.e. customer cohort analysis, long-term revenue forecasting).

In practice, the primary use-case of calculating the ARPA is comparing cohorts of accounts, which can be categorized by customer type, the month onboarded, and various other factors.

High-growth SaaS companies frequently implement changes to maintain growth (and increase expansion revenue), so tracking ARPA in segments can bring attention to growth or contraction MRR.

Note that customers who were offered a free trial must be excluded from the calculation – otherwise, ARPA will be unnecessarily weighed down by a freemium strategy.


Often, ARPA is used interchangeably with average revenue per account (ARPU).

While the distinction is usually negligible, the distinction can be quite significant in certain cases as a single customer can be the owner of multiple accounts (i.e. per-user or per-seat pricing plans).

Having one customer owning multiple accounts is most common for B2B companies (i.e. a company purchasing licenses for multiple employees).

Since averaging the total revenue brought in can be overly simplistic – as in the case of ARPU –  SaaS companies can opt to segment them into two categories.

  1. New ARPA
  2. Existing ARPA

By doing so, a company can better understand the behavior of its customers and make appropriate adjustments to its business model, e.g. setting the pricing appropriately, targeting the right customers, and identifying common causes of customer churn.

The issue with the ARPU metric for SaaS companies is that an outlier – an account in which revenue is highly concentrated – can skew the average and potentially conceal a decrease in revenue per account.

Interpreting Average Revenue Per Account (ARPA)

Separating the two enables SaaS companies to obtain more granular insights into their recurring revenue trends on a more individualized basis.

If there is a large difference between new and existing ARPA, it could potentially signify that ARPA is trending in the wrong direction.

On the other hand, having a new ARPA that is higher than the existing ARPA clearly that indicates that the company is monetizing its users more effectively than in the past.

Additionally, ARPA can show companies which specific products have the most demand, the end markets most receptive to the products, and which customer types to target to maximize profitability.

Average Revenue Per Account (ARPA) Excel Calculator

We’ll now move to a modeling exercise, which you can access by filling out the form below.

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Average Revenue Per Account (ARPA) Example Calculation

Suppose a SaaS company has 10,500 accounts in January, with zero customer churn in the next month.

Based on a cut-off date, the company’s customers are split into existing and new accounts.

In January, the monthly recurring revenue (MRR) of both customer types is shown below:

  • Existing Accounts MRR = $240,000
  • New Accounts MRR = $20,000

For February, the MRR from existing accounts increases by $10,000, while the MRR from new accounts declines by $5,000.

  • Existing Accounts MRR = $250,000
  • New Accounts MRR = $15,000

Thus, the total MRR for the two months comes out to $260,000 and $265,000.

If we divide the MRR by the corresponding cohort’s number of accounts, we arrive at the following figures:

  • January
      • Existing ARPA = $24.00
      • New ARPA = $40.00
  • February
      • Existing ARPA = $25.00
      • New ARPA = $30.00

The ARPA from existing accounts grew by $1.00, while the ARPA from new accounts fell by $10.00.

However, the drop-off in revenue from new accounts is not reflected by the total MRR (if we did not segment the customers by type).

The increase in ARPA from existing accounts was insignificant but still enough to offset the entirety of the lost ARPA from new accounts.

If the company’s new ARPA had increased over time, that would have been a positive indicator that the current go-to-market strategy and sales and marketing efforts were paying off.

But in this example, the opposite was observed, as the recent changes led to a decline in MRR per account and greater reliance on previously acquired accounts, which is not ideal.

Average Revenue Per Account (ARPA) Calculator

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