There isn't a single "best" method. The most appropriate method depends on the type of business, its assets, its profitability, and the reason for the valuation. For most owner-operated small businesses, the Seller's Discretionary Earnings (SDE) multiple method is widely used and highly relevant. However, always combine it with at least one other method (like asset-based or market comparables) to get a balanced view.

It's a good practice to review your business's value periodically, perhaps annually or every two to three years, especially if you're actively managing it for growth. You should definitely value your business before making any major decisions, such as selling, seeking investment, taking out a significant loan, or planning for retirement.

You can certainly perform an initial valuation yourself using the methods outlined in this guide. This is excellent for gaining a basic understanding and for internal planning. However, for critical situations like buying or selling a business, or for legal and tax purposes, it is highly recommended to engage a professional business valuer or accountant. They provide unbiased, detailed reports that can withstand scrutiny and consider complex factors you might miss.

SDE stands for Seller's Discretionary Earnings. It's a key financial metric used in valuing small businesses. It represents the total financial benefit a single owner-operator receives from the business before income taxes. It's calculated by taking the net profit of the business and adding back the owner's salary, any non-recurring expenses, and any personal-related expenses the owner runs through the business.

A "multiple" is a factor used in earnings-based valuations. It's a number (e.g., 2, 3, 4) by which a business's earnings (like SDE or EBITDA) are multiplied to arrive at its estimated value. For example, if a business has SDE of £100,000 and the industry multiple is 3, its value is £300,000. Multiples vary significantly by industry, risk level, growth potential, and other characteristics of the business.

Finding accurate industry multiples can be challenging for small businesses. Reliable sources include professional business brokers who have access to transaction databases, industry associations, and specialist valuation firms. Online business-for-sale platforms might list asking price multiples, but these are not always final sale prices. It's crucial to ensure the multiple you use is for businesses similar in size, industry, and location to your own.