---
title: Why Your Best Month Hides Your Worst Decision
description: Your best month might be hiding your worst decision. Learn to read the data behind the number.
image: https://www.brookwoodgrowth.com/hubfs/brookwood/Blog%20Photos/patrick-tomasso-NlcCPeKNmwg-unsplash.jpg
---

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3. Why Your Best Month Hides Your Worst Decision

\- Business Growth

# Why Your Best Month Hides Your Worst Decision

Your best month might be hiding your worst decision. Learn to read the data behind the number.

BG

By Brookwood Growth 

May 28, 2026 Updated Oct 16, 2026 6 min read

![Restaurant bar counter with Square point-of-sale terminal representing the revenue numbers that can hide poor underlying business decisions](https://www.brookwoodgrowth.com/hubfs/brookwood/Blog%20Photos/patrick-tomasso-NlcCPeKNmwg-unsplash.jpg)

**After a record sales month, do not change anything permanent until you know how much of the month will repeat. A record month hides a bad decision because it makes every recent choice look right, so the next move (a hire, a lease, more ad spend) gets sized to the peak instead of the baseline. Sort the month into repeatable and one-time revenue first, then size every commitment to the repeatable part.**

Your best month ever just closed. Revenue hit a new high and the team is celebrating. Here is the uncomfortable question: what if that month is steering your next decision wrong?

Owner-operators make some of their most expensive calls right after a record month. Cash looks good, confidence is high, and the instinct is to press forward: hire faster, spend more, sign the bigger space. What rarely happens in that window is a plain look at why the month was exceptional.

## Why can a record month be misleading?

Because a single month mixes three different things: revenue that will repeat, revenue that will not, and revenue that is not really yours yet. Price changes are one common mix-in. In late 2025, 58% of small businesses said they expected to raise prices that holiday season because of inflation, so a record revenue month can reflect higher prices rather than more customers ([MetLife & U.S. Chamber Small Business Index, Q4 2025](https://www.uschamber.com/sbindex/2025-Q4/summary)). Other usual suspects are one large project, a customer who prepaid a year, demand pulled forward by a promotion, and costs pushed into next month.

There is a human reason it is hard to see. Researchers found that people judge a past experience largely by its most intense moment and how it ended, not by its full length, a pattern called the peak-end effect ([Kahneman, Fredrickson, Schreiber & Redelmeier, Psychological Science, 1993](https://doi.org/10.1111/j.1467-9280.1993.tb00589.x)). Their study measured memories of pain, not sales, so treat it as a reminder rather than proof. Still, a record month is a peak, and it is easy to let it stand in for the whole year.

## What should I do after a record sales month?

Run one test before any decision that is hard to reverse. We call it the baseline-first rule: split your decisions into commitments and bets, and size only the bets to the peak.

**Commitments** are the things that are slow or costly to undo: a salary, a lease, an annual contract, a price cut you have already announced. Size these to your baseline, which is the *median* of the last six months with the record month left out. A median is not pulled around by one big month the way an average is.

**Bets** are the things you can stop within a month or two: a test ad budget, a short-term contractor, a one-off event. These can use the extra the record month gave you, because walking away is cheap.

Illustrative example: your last six months were $128K, $134K, $139K, $141K, $144K and $146K, and the record month came in at $200K. The median of the six is $140K. Now take out the one $45K project that will not come back. The month was really $155K, which is $15K above your baseline. That $15K is the part that might be real growth. The other $45K is a one-time gift, and the right place for it is cash reserves or a reversible bet, not a new salary.

## How do I check whether it will repeat?

Four questions, answered in writing before you decide anything:

1\. What is the median of the last six months, leaving this month out?

2\. What would this month look like without its single largest deal or customer?

3\. Was this month also strong last year (see seasonality below), or is it genuinely new?

4\. Did the team, or you, sprint in a way that cannot continue, or defer a cost to make the number look better?

If you cannot answer all four cleanly, your next decision rests on a feeling, not a number. That is the moment to look at [the cash gap](https://www.brookwoodgrowth.com/blog/the-cash-gap-when-revenue-rises-but-cash-stays-flat): if revenue jumped and the bank balance did not, the month is not as good as it looks.

## How do I manage seasonal revenue in a small business?

Compare each month with the same month a year ago, not only with last month, and keep a trailing twelve-month total next to it. A strong October that is level with last October is not a record in any useful sense. A strong October that beats last October by more than the rest of the year beat its own prior year is the signal worth acting on.

If your revenue swings with the seasons, set the baseline for commitments from the full twelve-month average and plan cash for the slow months while the busy ones are still fresh. For a cleaner read on where the month really came from, [the one number that shows where a business is leaking](https://www.brookwoodgrowth.com/blog/your-revenue-per-employee-tells-you-everything) and [what your pipeline is really telling you](https://www.brookwoodgrowth.com/blog/what-your-pipeline-is-really-telling-you) are good next steps.

## The one decision to make this week

Pick the biggest decision you have been tempted to make since the record month. Write down whether it is a commitment or a bet. If it is a commitment, check it against the baseline number, not the peak, and hold it until it passes. Find the gap between the month you celebrated and the month you can plan around, then close it with a number you can defend. If you want a quick read on which gap in your business to look at first, the [2-minute Gap Check](https://www.brookwoodgrowth.com/gap-check) is a good place to start.

## Frequently asked questions

### How can a best month hide a bad decision?

A record month makes recent choices look right, so the next commitment gets sized to the peak. If part of the month came from a one-time deal, a price change or pulled-forward demand, the decision rests on revenue that will not repeat.

### What should I do after a record sales month?

Separate repeatable revenue from one-time revenue, compare it with your six-month median and with the same month last year, and size slow-to-undo commitments such as hires and leases to that baseline. Use the extra only for bets you can reverse.

### Why can a record month be misleading?

One month can mix repeatable sales, a single large project, higher prices, prepayments and deferred costs. Without separating them, the headline number says little about what next month will look like.

### How do I manage seasonal revenue in a small business?

Compare each month with the same month last year, track a trailing twelve-month total, and set long-term commitments from the twelve-month picture while planning cash for the slow months.

## More from When numbers don't agree

### [![Close-up of hands counting cash on desk with calculator, charts, and laptop, illustrating financial management.](https://images.pexels.com/photos/6694535/pexels-photo-6694535.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940?w=600) Business Growth Reallocating Spend You Already Have](https://www.brookwoodgrowth.com/blog/reallocating-spend-you-already-have)

### [![Business documents, notepad, and calculator on a desk representing the financial analysis required before making a hiring decision](https://www.brookwoodgrowth.com/hubfs/brookwood/Blog%20Photos/kelly-sikkema-U20dtBwxHEU-unsplash.jpg?w=600) Business Growth Why Your Next Hire Should Be Defined by This One Number](https://www.brookwoodgrowth.com/blog/why-your-next-hire-should-be-defined-by-this-one-number)

### [![Hand holding a US dollar bill representing the true cost of misplaced customer loyalty](https://www.brookwoodgrowth.com/hubfs/brookwood/Blog%20Photos/emilio-takas-W-fR1UVzGAU-unsplash.jpg?w=600) Business Growth The Loyalty That's Actually Costing You Profit](https://www.brookwoodgrowth.com/blog/loyalty-costing-profit)

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