Calculating Goodwill Using the Average Profit Method

When two people decide to buy and sell a running business, one question always causes friction: what is the business worth beyond its machines, stock, and cash? That extra value-built from reputation, customer loyalty, and years of trust-is goodwill, and putting a number on it is trickier than it sounds. The average profit method is one of the simplest and most widely used ways to solve this problem, and it’s usually the first technique students of corporate accounting learn before moving to more complex approaches like super profit or capitalisation.

What is the average profit method? 🔗

The average profit method values goodwill by looking at a firm’s past earnings, averaging them out, and multiplying that average by an agreed number of years. The logic is straightforward: if a business has consistently earned good profits in the past, a buyer is willing to pay extra today for the expectation that those profits will continue for a few years into the future. This method is preferred over valuing goodwill on a single year’s profit because one year alone can be skewed by an unusually good or bad season, while an average smooths out these swings.

This approach is commonly used in partnership accounting-when a new partner joins, an existing partner retires, or profit-sharing ratios change-as well as in the sale of sole proprietorships and small businesses where a full-scale valuation exercise isn’t necessary.

The formula: breaking it down 🔗

The core formula is refreshingly simple:

Two components decide the final figure: the average profit itself, and the number of years’ purchase. Both need careful thought before you multiply them together, because a mistake in either one throws off the entire valuation.

Step 1: Calculating average profit 🔗

Average profit is not simply the accounting profit copied from the last few years’ books. It needs adjustment first. According to standard practice for this calculation, the following changes are typically made to each year’s reported profit before averaging:

• Add back abnormal losses: Losses from one-off events like a fire, theft, or a lawsuit settlement don’t reflect the business’s normal earning capacity, so they’re added back.
• Deduct abnormal gains: Windfall income such as profit from selling old machinery or a lottery win is removed, since it won’t recur.
• Include missed normal income or expenses: If a regular business expense or income was left out by mistake, it’s corrected.
• Adjust for non-business income: Any income unrelated to the core business operations, such as interest on personal investments routed through the firm, is excluded.

Once each year’s profit is cleaned up this way, the adjusted figures are added together and divided by the number of years to arrive at the average profit.

Step 2: Deciding the number of years’ purchase 🔗

The number of years’ purchase represents how many years the buyer expects to keep earning the same level of profit purely because of the seller’s past efforts and reputation-not because of any new investment the buyer makes. This figure is agreed upon by the parties involved, usually somewhere between two and five years. Industries with stable, predictable demand typically justify a higher multiplier, while businesses in volatile or highly competitive sectors are valued with a lower one, since their future earning power is less certain.

A worked example 🔗

Suppose a small electronics retail store is being sold, and both parties agree to value goodwill on the basis of 3 years’ purchase. The store’s profits for the last four years, after adjustments, are as follows:

Total profit for the four years comes to ₹16,00,000. Dividing this by 4 gives an average profit of ₹4,00,000. Applying the formula:

Goodwill = Average Profit × Number of Years’ Purchase
Goodwill = ₹4,00,000 × 3 = ₹12,00,000

The buyer would therefore pay an additional ₹12,00,000 over and above the value of the store’s tangible assets, purely for its established customer base and market reputation.

Simple average vs weighted average 🔗

The example above uses a simple average, where every year counts equally. But real businesses rarely have flat, unchanging profits-they usually trend upward, downward, or fluctuate. In such cases, a weighted average is more accurate. Here, more recent years are given greater weight since they better represent the business’s current earning capacity. Weights such as 1, 2, 3, and 4 are commonly assigned, with the highest weight going to the most recent year. The weighted average profit is then found by dividing the sum of (profit × weight) by the sum of the weights, and this figure is multiplied by the number of years’ purchase just as before.

The rule of thumb: if profits have stayed roughly stable, a simple average works fine. If profits are clearly rising or falling, weighted average gives a fairer picture.

Why adjustments matter 🔗

Skipping the adjustment step is one of the most common mistakes students make. If a firm’s profit in one year was inflated because it sold an old delivery van for a large one-time gain, including that full amount in the average would overstate goodwill and mislead the buyer. Similarly, ignoring a genuine abnormal loss-say, damage from a flood-understates the business’s real earning potential. Careful adjustment of past profits ensures the average genuinely reflects what the business can be expected to earn under normal conditions going forward.

Advantages of the average profit method 🔗

• Easy to understand and apply: No complex present-value calculations or discounting are involved, which makes it accessible even to those without a finance background.
• Based on objective, verifiable data: Since it relies on historical profit figures already recorded in the books, there is less room for disagreement compared to methods based on future projections.
• Quick to calculate: Once adjusted profit figures are ready, the entire valuation takes minutes, which is useful in time-sensitive situations like estate settlements.
• Smooths out one-off fluctuations: Averaging several years reduces the distorting effect of any single unusually good or bad year.

Limitations to keep in mind 🔗

The method isn’t without flaws. It assumes the past is a reliable guide to the future, which doesn’t always hold-especially in industries facing rapid technological or regulatory change. The number of years’ purchase is also somewhat subjective; two parties can reasonably disagree on whether a business deserves a multiplier of 2 or 5, and this single number can swing the goodwill value considerably. Additionally, this method does not account for the risk or capital employed in earning those profits the way the super profit method does, which some accountants consider a more refined measure of goodwill.

When is this method typically used 🔗

The average profit method suits businesses with a track record of fairly steady earnings-retail stores, service firms, or small manufacturing units that haven’t seen major disruptions. It’s a natural first choice in partnership reconstitution cases, where the parties want a quick, mutually acceptable figure without commissioning a full valuation exercise. For larger companies with complex capital structures, or where profits are volatile, professionals usually turn to the super profit or capitalisation methods instead, since these factor in the return expected on capital employed.

What do you think? If you were buying a small business with profits that jumped around quite a bit from year to year, would you trust a simple average, or would you insist on the weighted average approach instead? And how many years of purchase would feel fair to you as a buyer versus as a seller?

References

1. https://ebooks.inflibnet.ac.in/mgmtp02/chapter/valuation-of-goodwill-needs-and-methods/
2. https://www.shaalaa.com/question-bank-solutions/explain-various-methods-valuation-goodwill_79983
3. https://efinancemanagement.com/financial-accounting/methods-for-valuation-of-goodwill
4. https://www.geeksforgeeks.org/accountancy/average-profit-method-of-calculating-goodwill/
5. https://www.vedantu.com/commerce/valuation-of-goodwill
6. https://edurev.in/t/118575/ICAI-Notes-of-Ch-8-2-Treatment-of-Goodwill-in–Fun