What it means
In business and finance, distinguishing between paper losses and actual losses is essential for accurate record keeping. When the market value of an investment, piece of equipment, or inventory item drops, you experience a loss on paper.
This is known as an unrealised loss. However, you have not actually lost money until you complete a transaction that converts that asset back into cash or another form of payment at the lower price.
Once the sale is finalised, the loss becomes realised. This distinction matters greatly for both tax purposes and financial reporting.
Realised losses are formally recognised on your income statement, which directly impacts your net profit for the period. In many tax jurisdictions, realised losses can be used to offset realised gains, potentially lowering your tax bill.
Unrealised losses, meanwhile, generally do not affect your taxable income because asset values fluctuate constantly. For non-finance managers, understanding this concept helps in evaluating business decisions regarding when to cut losses.
Holding onto a declining asset hoping it will recover keeps the loss unrealised, but it also ties up capital that could be used productively elsewhere. When you finally sell, you accept the hit, clear the item from your books, and move forward with a realistic view of your financial position.
In practice
Real-world examples.
Example
TechStart bought office laptops for 10,000 pounds. A year later, market value dropped to 4,000 pounds. When they sold them for 4,000 pounds, they locked in a realised loss of 6,000 pounds.
Example
BuildCo purchased surplus steel for 15,000 pounds. Prices fell, and they eventually sold the steel to a contractor for 11,000 pounds, creating a realised loss of 4,000 pounds on the transaction.
Example
RetailCorp held shares in a supplier that dropped in value. They sold the shares for 8,000 pounds after buying them for 12,000 pounds, resulting in a realised loss of 4,000 pounds.
Think of it
“Imagine buying a vintage car for 10,000 pounds. If car values crash and experts say it is now worth 4,000 pounds, you have an unrealised loss. You only experience a realised loss when you hand over the keys and accept 4,000 pounds in cash.
Formula
Calculation
Realised Loss = Purchase Price (Cost Basis) - Sale Price
Example: If your business bought machinery for 25,000 pounds and later sold it for 18,000 pounds, the calculation is:
25,000 - 18,000 = 7,000 pounds realised loss.Case study
Seen in the real world.
BrightView Media, a digital marketing agency, purchased company shares as a short-term investment for 50,000 pounds. Due to market shifts, the portfolio value dropped to 35,000 pounds over six months. Initially, this 15,000 pound drop was recorded as an unrealised loss, remaining hidden from the profit and loss statement.
However, the agency needed immediate working capital to fund a new service line. The management team decided to sell the entire share portfolio at the current market value of 35,000 pounds. By completing the sale, the loss transitioned from paper to reality. BrightView recorded a 15,000 pound realised loss on its income statement for that month.
While the loss reduced their net income for the period, it freed up 35,000 pounds in liquid cash. The managers used this cash to invest in high-margin client projects, generating enough new revenue in the subsequent quarter to offset the financial impact of the sale. This scenario highlights how managers must sometimes accept a realised loss to gain liquidity and pursue better business opportunities.
Watch out
Common mistakes.
- Assuming an unrealised loss on your balance sheet affects your current tax bill.
- Delaying the sale of a failing asset indefinitely just to avoid seeing a loss on the income statement.
- Confusing cash flow with a realised loss, as the loss is an accounting measure of value reduction rather than pure cash movement.
Questions
People also ask.
Do realised losses reduce my business taxes?
Often, yes. In many tax systems, realised losses can offset realised gains, reducing your overall taxable profit for the year.
What is the opposite of a realised loss?
The opposite is a realised gain, which occurs when you sell an asset for more than you paid for it.
Why not keep assets with unrealised losses forever?
Holding onto failing assets ties up capital that could be used more productively elsewhere in your business.
From the founder's library

Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%Related
