Month-Over-Month Growth: Formula, Meaning & Example

Month-over-month growth, often abbreviated MoM growth, measures the percentage change in a metric from one month to the immediately preceding month.

If revenue increases from $500,000 in January to $550,000 in February:

Month-Over-Month Growth = (Current Month − Previous Month) ÷ Previous Month × 100

MoM Growth = ($550,000 − $500,000) ÷ $500,000 × 100

MoM Growth = 10%

Revenue grew 10% month over month.

The same formula can be applied to customers, transactions, units sold, recurring revenue, costs, website traffic, profit, or almost any metric measured consistently across consecutive months.

What Is Month-Over-Month Growth?

Month-over-month growth shows how quickly a metric changes over a short period.

Suppose a business reports:

March Customers = 10,000

April Customers = 10,600

Difference:

600 Customers

MoM customer growth:

600 ÷ 10,000 × 100 = 6%

The customer base grew 6% between March and April.

Because the comparison uses adjacent months, it responds quickly to changes in business performance.

That sensitivity is useful, but it can also make MoM growth noisy when seasonality, billing timing, promotions, or one-time events affect a single month.

Month-Over-Month Growth Formula

The standard formula is:

MoM Growth % = (Current Month Value − Previous Month Value) ÷ Previous Month Value × 100

An equivalent form is:

MoM Growth % = (Current Month Value ÷ Previous Month Value − 1) × 100

Suppose:

Previous Month = $800,000

Current Month = $920,000

Using the first formula:

($920,000 − $800,000) ÷ $800,000 × 100 = 15%

Using the ratio form:

($920,000 ÷ $800,000 − 1) × 100 = 15%

Both produce the same result.

Month-Over-Month Growth Example

Suppose monthly sales are:

February MoM growth:

($440,000 − $400,000) ÷ $400,000 × 100

= 10%

March MoM growth:

($462,000 − $440,000) ÷ $440,000 × 100

= 5%

Revenue still increased in March, but the monthly growth rate slowed from 10% to 5%.

The distinction between positive growth and accelerating growth is important.

Positive MoM Growth

When the current month’s value exceeds the previous month’s value:

MoM Growth > 0%

For example:

Previous Month = 1,000 Units

Current Month = 1,100 Units

Growth:

(1,100 − 1,000) ÷ 1,000 × 100 = 10%

The metric increased 10%.

Negative Month-Over-Month Growth

When the current month is lower:

MoM Growth < 0%

Suppose revenue decreases from $600,000 to $510,000.

($510,000 − $600,000) ÷ $600,000 × 100

= −15%

Revenue declined 15% month over month.

A negative result does not automatically indicate poor underlying performance. Seasonal businesses may routinely experience sequential declines after peak months.

Zero Month-Over-Month Growth

If the value does not change:

Current Month = Previous Month

then:

MoM Growth = 0%

Suppose:

April Revenue = $700,000

May Revenue = $700,000

Then:

($700,000 − $700,000) ÷ $700,000 = 0%

The metric is flat month over month.

MoM Growth in Revenue

Revenue is one of the most common metrics measured month over month.

Suppose:

June Revenue = $1.2M

July Revenue = $1.38M

Increase:

$180,000

MoM growth:

$180,000 ÷ $1.2M × 100 = 15%

The company generated 15% more revenue in July than in June.

That result does not reveal whether the improvement came from higher prices, more customers, greater unit volume, product mix, or one-time transactions.

Month-Over-Month Customer Growth

Suppose:

Starting Month Customers = 5,000

Next Month Customers = 5,250

Net increase:

250

Growth:

250 ÷ 5,000 × 100 = 5%

The customer base grows 5%.

However, the net increase can hide substantial customer churn.

For example, the company could have lost 500 customers and acquired 750 new ones.

Net customer growth would still be 250.

Growth and retention should therefore be analyzed separately.

Month-Over-Month Growth in Monthly Recurring Revenue

For subscription businesses, monthly recurring revenue is often tracked sequentially.

Suppose:

January MRR = $200,000

February MRR = $230,000

Growth:

($230,000 − $200,000) ÷ $200,000 × 100

= 15%

The recurring revenue base increased 15% month over month.

However, the exact specialist measure monthly recurring revenue growth focuses specifically on changes in MRR and its recurring components.

General MoM growth can be applied to many different business metrics.

MoM Growth vs. MRR Growth

Month-over-month growth describes a time comparison.

MRR growth describes changes in a specific recurring-revenue metric.

Suppose total monthly revenue rises 20%, but MRR rises only 5% because the month includes a large one-time project.

Then:

Total Revenue MoM Growth = 20%

MRR Growth = 5%

Both results are correct.

They describe different economic changes.

A subscription business should not call every monthly revenue increase MRR growth.

MoM Growth vs. Quarter-Over-Quarter Growth

Quarter-over-quarter growth compares one quarter with the immediately preceding quarter.

MoM is more responsive.

QoQ is generally less sensitive to one unusual month.

Suppose monthly revenue is:

January = $1M

February = $1M

March = $2M

March MoM growth:

100%

That one month produces a dramatic sequential result.

A quarterly total can smooth some of the volatility by combining all three months.

The right interval depends on how quickly management needs to detect change and how seasonal the business is.

MoM Growth vs. Year-Over-Year Growth

Year-over-year growth compares a month or other period with the corresponding period one year earlier.

MoM compares with the immediately preceding month.

For a seasonal retailer:

December Revenue = $5M

January Revenue = $2M

January MoM growth:

($2M − $5M) ÷ $5M = −60%

That looks severe.

But if prior January revenue was only $1.6M:

YoY Growth = ($2M − $1.6M) ÷ $1.6M = 25%

The business declined 60% sequentially after the holiday season while still growing 25% year over year.

Both statements are true.

Why Seasonality Matters

Consider an ice-cream business.

Sales naturally rise during warmer months and decline during colder months.

A 20% decline from August to September may reflect the normal seasonal cycle rather than weakening competitive performance.

Likewise, a retailer’s November-to-December growth can look spectacular because of holiday demand.

MoM growth should therefore be interpreted with historical seasonal patterns rather than treated as a standalone trend.

Month-Over-Month Growth and Forecasts

A monthly result can also be compared with an internal forecast.

Suppose February revenue grows 8% from January.

Management had expected 12% growth.

Actual sequential growth is positive, but it is below expectations.

The separate forecast variance framework can quantify the difference between actual and forecast values.

MoM growth measures change over time.

Forecast variance measures deviation from plan.

MoM Growth and Margin

Growth should be evaluated alongside margin.

Suppose:

January

Revenue = $1M

Margin = 40%

Margin dollars:

$400K

February

Revenue = $1.2M

Margin = 30%

Margin dollars:

$360K

Revenue MoM growth:

20%

But margin dollars decline:

($360K − $400K) ÷ $400K = −10%

The business generates more revenue but less margin.

Headline growth is therefore not enough to establish stronger economics.

MoM Margin Growth vs. Percentage-Point Change

Suppose margin moves from:

30% to 33%

The percentage-point increase is:

3 Percentage Points

Relative growth of the margin rate is:

(33% − 30%) ÷ 30% × 100 = 10%

Both statements are mathematically valid.

For margin reporting, stating the 3-percentage-point improvement is usually clearer than saying margin grew 10%.

MoM Growth and Logo Retention

Logo retention can reveal whether monthly customer growth is supported by a durable customer base.

Suppose customer count grows:

5% MoM

but monthly logo retention is only:

90%

The company may be acquiring customers rapidly while losing many existing accounts.

Another company could grow customers only 2% monthly while retaining 99%.

The slower-growing company may have a more durable base.

Growth and retention measure different parts of the customer engine.

MoM Growth and Gross Revenue Retention

Gross revenue retention provides similar context for recurring revenue.

Suppose MRR grows 8% month over month.

That growth could come from strong new acquisition despite substantial churn and contraction.

If GRR is weak, the business may need continuous acquisition merely to replace recurring revenue that disappears.

A strong MoM result becomes more valuable when the underlying revenue base is also durable.

MoM Growth and the SaaS Magic Number

The magic number saas compares recurring-revenue growth with sales and marketing spending.

MoM growth tells management how quickly revenue changed.

The Magic Number adds:

How much commercial investment was required to create that growth?

Two businesses can each grow recurring revenue 10% monthly but spend radically different amounts to do it.

The faster or cheaper growth engine can have very different economic value.

MoM Growth and Annual Recurring Revenue

Annual recurring revenue can increase because MRR grows.

Suppose:

January MRR = $500,000

ARR equivalent:

$6M

February MRR:

$550,000

ARR equivalent:

$6.6M

MRR MoM growth:

10%

The annualized recurring run rate also increases 10% because both values are multiplied by the same factor of 12.

That does not mean the business earned $6.6 million of revenue during February or will necessarily maintain that run rate for a full year.

Compounding Month-Over-Month Growth

Repeated monthly growth compounds.

Suppose a metric begins at 100 and grows 5% every month.

After one month:

100 × 1.05 = 105

After two:

105 × 1.05 = 110.25

After 12 months:

100 × 1.05¹² ≈ 179.59

The metric grows approximately:

79.59%

over 12 compounded monthly periods.

This is very different from simply multiplying:

5% × 12 = 60%

because each month’s growth is applied to an increasingly larger base.

Annualizing Monthly Growth

A compounded annual equivalent from a constant monthly rate is:

Annualized Growth = (1 + Monthly Growth Rate)¹² − 1

For 3% monthly growth:

(1.03)¹² − 1 ≈ 42.58%

For 5%:

≈ 79.59%

For 10%:

(1.10)¹² − 1 ≈ 213.84%

These calculations show what would happen if the exact monthly rate continued for 12 periods.

They are not forecasts by themselves.

Sustaining a high monthly rate becomes increasingly difficult as the base grows.

Why 10% Monthly Growth Is Not Simply 120% Annually

Suppose starting revenue is $1 million.

A simple 120% annual increase would produce:

$2.2M

But compounding 10% monthly produces:

$1M × 1.10¹² ≈ $3.138M

Total growth:

≈ 213.8%

The difference comes from growth on prior growth.

This is why compounding matters in recurring-revenue and customer-growth models.

Consecutive Positive Growth

Suppose monthly revenue is:

Revenue rises every month.

However, the growth rate is slowing.

This is called decelerating growth.

Positive growth alone does not mean momentum is accelerating.

Accelerating MoM Growth

Suppose:

Revenue is growing and the sequential growth rate is increasing.

That is accelerating growth.

Management should still determine whether the acceleration is sustainable and profitable.

A Declining Growth Rate Is Not the Same as Declining Revenue

Suppose:

January Revenue = $100K

February = $120K

March = $132K

February growth:

20%

March growth:

10%

Growth has slowed from 20% to 10%.

But March revenue is still 10% higher than February.

A falling growth rate is a deceleration, not necessarily a decline in the underlying metric.

Rebound Effects

Month-over-month growth can look unusually high after a weak prior month.

Suppose:

January Revenue = $1M

February = $500K

March = $900K

February MoM:

−50%

March MoM:

($900K − $500K) ÷ $500K = 80%

March shows spectacular 80% growth, but revenue remains:

10% below January

A large rebound percentage can therefore occur simply because the previous month’s base was unusually low.

Base Effects

A $100,000 increase has very different growth implications depending on the starting value.

From:

$200,000 to $300,000

growth is:

50%

From:

$2M to $2.1M

growth is:

5%

The absolute increase is $100,000 in both cases.

Percentage growth depends on the size of the prior-month denominator.

This is called a base effect.

What If the Previous Month Is Zero?

If the previous month value is zero:

MoM Growth = (Current − 0) ÷ 0

The conventional percentage formula is undefined because division by zero is impossible.

Suppose a new product has:

January Revenue = $0

February Revenue = $50,000

It is correct to say revenue increased by $50,000 from a zero base.

It is not mathematically valid to report a conventional MoM percentage growth rate.

Businesses should label this situation as new, not meaningful, or N/M rather than inventing an infinite percentage.

What If Both Months Are Zero?

If:

Previous Month = $0

Current Month = $0

the conventional growth percentage remains undefined because the denominator is zero.

The metric is unchanged in absolute terms, but a percentage growth calculation is not meaningful.

Reporting 0% may be convenient in some dashboards, but technically it is a reporting convention rather than the result of the standard formula.

Negative Starting Values

Percentage growth becomes difficult to interpret when the previous-month value is negative.

Suppose profit changes from:

−$100K to −$50K

Using the ordinary formula:

(−$50K − (−$100K)) ÷ −$100K

= $50K ÷ −$100K = −50%

The calculation produces negative 50%, even though the loss improved substantially.

This is why conventional percentage growth should be used cautiously when values cross or remain below zero.

Absolute changes and percentage-point measures can be clearer.

Crossing From Negative to Positive

Suppose net income changes from:

−$20,000 to +$30,000

Absolute improvement:

$50,000

A conventional growth percentage using the negative starting value produces a result that is difficult to interpret economically.

Reporting:

“Net income improved by $50,000, moving from a $20,000 loss to a $30,000 profit.”

is much clearer.

MoM percentage growth works best for positive denominators.

Month Length Can Distort Comparisons

Not every month contains the same number of days.

Suppose daily sales are perfectly constant at $10,000.

February with 28 days:

$280,000

March with 31 days:

$310,000

MoM growth:

($310K − $280K) ÷ $280K ≈ 10.71%

Nothing improved operationally. March simply had three additional calendar days.

For businesses with daily transaction volume, revenue per day can provide useful context.

Business-Day Differences

The same issue occurs when operating days vary.

Suppose a B2B company operates only on weekdays.

A month with 23 business days can naturally generate more activity than a month with 20 business days.

Management can analyze both:

Total Monthly Growth

and:

Growth per Business Day

to separate calendar effects from underlying productivity.

Partial-Month Data

Comparing a partial current month with a full previous month produces misleading growth.

For example:

First 15 Days of April Revenue = $500K

Full March Revenue = $900K

Calculating:

($500K − $900K) ÷ $900K

would imply a 44.44% decline.

But April is only halfway complete.

Use completed comparable periods or clearly labeled run-rate analysis.

Moving From Absolute Change to Percentage Growth

Absolute change is:

Current Month − Previous Month

Percentage growth is:

Absolute Change ÷ Previous Month × 100

Suppose customers increase from 20,000 to 21,000.

Absolute change:

+1,000 Customers

MoM growth:

1,000 ÷ 20,000 × 100 = 5%

Both figures are useful.

Absolute changes show scale.

Percentages make changes more comparable across different-sized periods or businesses.

Month-Over-Month Cost Growth

MoM growth can also be applied to costs.

Suppose:

January Operating Expenses = $200K

February = $230K

Growth:

15%

If revenue grows only 5% during the same period, cost growth is substantially outpacing top-line growth.

That can pressure margins.

A growth rate should therefore be compared with economically related metrics rather than evaluated in isolation.

Revenue Growth vs. Expense Growth Example

Suppose:

January

Revenue = $1M

Expenses = $800K

February

Revenue = $1.1M

Expenses = $920K

Revenue MoM growth:

10%

Expense growth:

15%

January profit:

$200K

February profit:

$180K

Revenue grew, but profit declined because expenses increased faster.

Comparing Multiple Monthly Metrics

A useful operating view might show:

The table shows not just whether the company grew, but what grew fastest.

Revenue outpaced customer growth, which may indicate higher average monetization.

Expenses grew slower than revenue.

Margin improved by two percentage points.

That combination provides far more insight than one headline growth percentage.

Smoothing Volatile Monthly Growth

When monthly values are noisy, management can use rolling averages.

Suppose revenue fluctuates sharply because a few large contracts close irregularly.

A three-month rolling average can reduce noise while preserving a relatively current view.

This does not replace MoM growth.

It provides a second lens that helps distinguish a one-month spike from a broader trend.

Month-Over-Month Growth Trend Example

Suppose MoM revenue growth is:

January to February = 12%

February to March = 9%

March to April = 7%

April to May = 4%

May to June = 1%

Revenue is still growing every month, but momentum is decelerating steadily.

Management can investigate whether the slowdown reflects market saturation, reduced marketing, seasonality, lower pricing, customer churn, capacity constraints, or the natural difficulty of growing from a larger base.

What Is a Good Month-Over-Month Growth Rate?

There is no universal target.

A suitable rate depends on:

• company size;
• business maturity;
• market size;
• seasonality;
• customer retention;
• profitability;
• acquisition economics;
• available capital; and
• the metric being measured.

A startup growing recurring revenue 10% monthly and a mature retailer growing 1% monthly operate in completely different contexts.

The quality and sustainability of growth matter more than one universal benchmark.

How to Improve Month-Over-Month Growth

The appropriate action depends on the metric.

Revenue growth can improve through new customer acquisition, higher pricing, stronger retention, expansion revenue, better conversion, higher transaction volume, or improved product mix.

Customer growth can improve through acquisition and lower churn.

Margin growth can come from better pricing, lower cost, or more profitable mix.

Because MoM is a calculation rather than a business driver, management should identify the underlying cause of the metric before deciding what to change.

Common Month-Over-Month Growth Mistakes

A common mistake is dividing by the current month instead of the previous month.

Another is comparing partial-month data with a completed month.

Businesses can also ignore seasonality and calendar-day differences.

Another error is annualizing monthly growth by simply multiplying by 12 instead of compounding.

Companies sometimes report conventional growth percentages when the previous value is zero or negative.

A strong rebound from a weak prior month can also look more impressive than the longer-term trend.

Finally, growth should be evaluated alongside retention, margin, and acquisition efficiency rather than treated as proof of strong economics.

Frequently Asked Questions

What is month-over-month growth in simple terms?

Month-over-month growth measures the percentage change in a metric from one month to the immediately previous month.

What is the month-over-month growth formula?

MoM Growth % = (Current Month − Previous Month) ÷ Previous Month × 100

How do you calculate 10% month-over-month growth?

If the previous month’s value is $100,000:

$100,000 × 1.10 = $110,000

The next month must reach $110,000 for 10% MoM growth.

What is an example of month-over-month growth?

If revenue rises from $500,000 to $575,000:

($575,000 − $500,000) ÷ $500,000 × 100 = 15%

Can month-over-month growth be negative?

Yes.

A negative result means the current month’s value is below the preceding month’s value.

Is MoM growth the same as MRR growth?

No.

MoM describes the comparison interval and can apply to any metric. MRR growth specifically measures changes in monthly recurring revenue.

What is the difference between MoM and QoQ growth?

MoM compares consecutive months. QoQ compares consecutive quarters.

What is the difference between MoM and YoY growth?

MoM compares with the previous month. YoY compares with the corresponding period one year earlier.

Why can MoM growth be misleading for seasonal businesses?

Sequential months may naturally have very different demand. A holiday retailer can fall sharply from December to January without experiencing year-over-year deterioration.

How do you annualize monthly growth?

For a constant monthly rate:

Annualized Growth = (1 + Monthly Rate)¹² − 1

This is a mathematical annualization, not a guarantee that the monthly rate will continue.

Is 5% monthly growth equal to 60% annual growth?

Not when compounded.

1.05¹² − 1 ≈ 79.59%

What happens if the previous month’s value is zero?

The standard percentage growth formula is undefined because it requires division by zero. Report the absolute increase or label the percentage as not meaningful.

Can MoM growth be used with negative values?

The arithmetic can be performed, but conventional percentage-growth interpretation becomes problematic. Absolute changes are often clearer when values are negative or cross zero.

Can revenue grow while margin declines?

Yes.

If costs rise faster than revenue, the company can report positive MoM revenue growth while profitability deteriorates.

Why should MoM growth be analyzed with logo retention?

Customer growth can look strong while existing customers leave rapidly. Logo retention shows whether the starting customer base remains intact.

Why does the SaaS Magic Number matter when MoM growth is strong?

The Magic Number adds sales-and-marketing cost context. Strong recurring growth may be less attractive if it requires disproportionately high commercial spending.

Why is month-over-month growth useful?

It provides a fast, standardized view of sequential change. Used with longer-term growth, retention, margin, and efficiency measures, it helps distinguish genuine momentum from seasonal or one-time movements.