The core revenue growth metric is the growth rate itself: this period’s revenue minus last period’s, divided by last period’s, expressed as a percentage. Sage puts 10% to 25% a year in the healthy range for a small business.
That single number is also not enough, because revenue can grow while the business gets worse. The useful set is five metrics: growth rate, which tells you the direction; run rate, which tells you where the year ends; repeat revenue share, which tells you whether growth compounds; the ratio of lifetime value to acquisition cost, which tells you whether growth is affordable; and gross margin alongside all of them, which tells you whether the new revenue is as good as the old.
The Bottom Line
- Revenue growth rate = (current period − prior period) ÷ prior period × 100.
- Always read growth rate next to gross margin. Revenue rising while margin falls means you are buying growth, not earning it.
- Compare like periods. Month-on-month growth in a seasonal business measures the season, not the business.
- Repeat revenue share separates compounding growth from a leaking bucket you keep refilling.
- A LTV to CAC ratio below roughly 3:1 means growth is getting expensive enough to question.
Lower your delivery costs by 23%
How we reduce costs:
- No delivery vehicle expenses
- Optimized local routes
- Pay-per-delivery model
- Average 23% delivery cost reduction
How to calculate revenue growth rate
Revenue growth rate = (revenue this period − revenue last period) ÷ revenue last period × 100
If you turned over £42,000 last quarter and £48,000 this quarter, that is (48,000 − 42,000) ÷ 42,000 = 14.3% quarterly growth.
Two decisions make this figure either useful or misleading.
Which periods you compare. Year-on-year comparison (this March against last March) strips out seasonality and is the right default for any business with a seasonal pattern, which is most of them. Month-on-month is only meaningful in a business with flat seasonal demand, and in a florist or a caterer it produces nonsense: February looks like a triumph and January looks like collapse, every year, regardless of performance.
Whether you annualise. A 14.3% quarterly growth rate compounds to roughly 70% annually, which sounds dramatically better and is usually a fiction, because it assumes three more quarters exactly like this one. Quote the period you measured.
Revenue run rate, and when it misleads
Run rate = revenue in the period × number of periods in a year
A month at £18,000 implies a £216,000 annual run rate. The figure is useful for planning against fixed costs, and it is the fastest way to answer “at this pace, where do we finish”.
The weakness is that it projects a single period across a whole year, so it inherits every distortion that period contained. Run-rating December in a gift business, or May in a wedding-flowers business, produces a number with no relationship to reality. Run-rate from a rolling three or twelve months instead, and treat any single-month run rate as a rough indication.
Repeat revenue share
Repeat revenue share = revenue from returning customers ÷ total revenue × 100
This is the metric that distinguishes two businesses with identical growth rates and completely different futures. One grows because last year’s customers order again and new ones arrive on top. The other grows because it replaces most of its customer base each year and adds slightly more than it loses.
The second is exhausting and fragile. Every pound of revenue has to be bought again, so growth stops the moment marketing spend stops, and the cost of that spend rises as the easy audience is used up.
A rising repeat share is the clearest sign growth is compounding. If it is falling while revenue rises, you have a retention problem being masked by acquisition, and the sequence to check is whether customers are satisfied before they lapse. Net promoter score is the leading indicator here, because willingness to recommend falls before repeat orders do.
Lifetime value against acquisition cost
The two numbers that decide whether growth is affordable.
Customer lifetime value = average order value × orders per year × years retained × gross margin %
Customer acquisition cost = total sales and marketing spend ÷ new customers acquired
Then the ratio. A customer worth £900 in gross profit who costs £150 to acquire gives you 6:1, which is comfortable. The conventional floor is around 3:1; below that, growth consumes so much of its own return that scaling makes the business more fragile rather than stronger.
Note the gross margin term in the lifetime value formula. Leaving it out is the commonest error, and it inflates the figure by whatever your cost of sales is, which is usually most of it. Lifetime revenue is not lifetime value.
The lever most owners overlook in this ratio sits in the first term. Raising average order value improves lifetime value proportionally without costing anything in acquisition, which makes it the cheapest way to fix a marginal ratio.
The margin check that validates growth
Growth metrics on their own cannot tell you whether growth is good. For that you need to put the growth rate beside the margin and look at the combination.
| Revenue | Gross margin | What it means |
|---|---|---|
| Rising | Stable or rising | Real growth. Keep going. |
| Rising | Falling | Growth bought with discounts or costly new business |
| Flat | Rising | Quality improving; pricing or mix is working |
| Falling | Rising | Shedding bad revenue, which can be deliberate and correct |
| Falling | Falling | The urgent case |
The second row is the one that catches people out, because the headline number looks like success. Revenue up 30% with gross margin down four points can easily mean less gross profit than the year before, on considerably more work. Whether the trade is sensible depends on what counts as a healthy margin in your trade, which profit margin benchmarks for small businesses covers by industry.
There is a cash dimension too. Growth consumes working capital before it produces any, because you buy stock and pay staff in advance of being paid, so a fast-growing business routinely feels poorer than a static one. That is normal and survivable if you are watching the cash flow metrics, and it is how otherwise healthy businesses fail if you are not.
Which growth metrics to track, and how often
| Metric | Formula | Review | Reads best as |
|---|---|---|---|
| Revenue growth rate | (Current − prior) ÷ prior × 100 | Monthly | Year-on-year, by month |
| Run rate | Period revenue × periods per year | Monthly | From a rolling 3 or 12 months |
| Repeat revenue share | Returning-customer revenue ÷ total × 100 | Quarterly | Trend over a year |
| LTV to CAC ratio | Lifetime value ÷ acquisition cost | Quarterly | Per channel, not blended |
| Gross margin | (Revenue − COGS) ÷ revenue × 100 | Monthly | Beside the growth rate |
One note on the LTV to CAC ratio: calculate it per channel wherever you can. A blended figure averages a £20 referral customer with a £200 paid-search customer and hides the only decision the metric exists to inform, which is where the next pound of marketing budget should go. The same logic applies to any spending decision of size, where the question becomes a straightforward return-on-investment calculation on the specific commitment.
Setting a realistic growth target
The 10% to 25% range is a reference point, not a plan. Three things should shape your own target.
Your base. Percentage growth gets harder as the base grows. Going from £100,000 to £125,000 is 25% and may be one good new account. Going from £1m to £1.25m is the same percentage and a different undertaking entirely.
Your capacity. Growth you cannot fulfil damages the business. If your current setup tops out at a certain volume, the honest target is bounded by that until you invest, and the investment decision comes first.
Your cash. Growth is funded before it pays. A target that exceeds what your working capital can support is a target to run out of money, which is why the growth plan and the cash forecast need to be the same conversation.
Revenue growth is one of five metric families in the wider set of small business metrics worth tracking.
Frequently asked questions
What is a good revenue growth rate for a small business?
Roughly 10% to 25% a year is the commonly cited healthy band, and Sage uses that range. The qualification matters more than the number: growth at a stable margin is good at almost any rate, and growth at a collapsing margin is not good at any rate.
How do you calculate revenue growth rate?
Subtract the prior period’s revenue from the current period’s, divide by the prior period’s, and multiply by 100. Use the same length of period on both sides, and prefer year-on-year comparison if your trade is seasonal.
What is the difference between revenue growth and profit growth?
Revenue growth measures sales; profit growth measures what you keep. They diverge whenever the cost of generating the new revenue is higher than the cost of the old, which is common when growth comes from discounting or from channels with heavier fulfilment costs.
Is month-on-month or year-on-year growth better?
Year-on-year for almost every small business, because it cancels out seasonality. Month-on-month figures in a seasonal trade mostly measure the calendar.
What does a falling repeat revenue share mean?
That acquisition is outrunning retention. Revenue may still be rising, but each year’s growth has to be bought again rather than building on the last, which makes the business more expensive to grow and more vulnerable if marketing spend pauses.
Where to start
Pull last year’s monthly revenue beside this year’s and calculate year-on-year growth by month. Then add gross margin as a second line on the same chart. If the two move together, the growth is real. If margin slopes down as revenue slopes up, you have found the question worth spending the next quarter on.
