What it means
For non-finance managers, understanding FIFO is essential because it directly affects your reported profit and the value of the stock sitting in your warehouse. When you buy inventory over time, prices usually rise due to inflation.
Under the FIFO method, the cost of the older, cheaper items goes onto your income statement first as the cost of goods sold. The newer, more expensive items remain on your balance sheet as current inventory.
Why does this matter? During periods of rising prices, FIFO results in a lower cost of goods sold and a higher gross profit.
This makes your business look more profitable on paper, which can please stakeholders and lenders. However, a higher profit often means you will pay more tax, because taxable income is calculated using these higher profit margins.
It also means your inventory value on the balance sheet reflects recent market prices, giving a realistic view of asset worth. In daily operations, FIFO aligns naturally with good physical stock management, especially for perishable goods, electronics, or style-driven products.
You want to clear older stock before it becomes obsolete or spoils, so matching your financial records to this physical flow makes operational sense. Even if your products do not physically move in this exact order, accounting rules often permit or require FIFO to standardise financial reporting.
Choosing the right inventory method is a strategic decision for business leaders. While FIFO is widely used because it tracks the natural flow of goods and values inventory closer to replacement cost, it can increase your tax burden in inflationary times.
As a manager, knowing how FIFO impacts your financial statements helps you interpret monthly reports accurately and plan your cash flow and tax payments effectively.
In practice
Real-world examples.
Example
A cafe buys milk at 1 pound per litre on Monday, and 1.20 pounds per litre on Tuesday. Using FIFO, when a customer buys a coffee, the cost of goods is recorded at the older Monday price of 1 pound.
Example
A boutique orders 50 dresses at 20 pounds each in January, and another 50 at 25 pounds in February. When selling the first 50 dresses, FIFO records the cost at 20 pounds each, yielding a higher profit.
Example
A hardware store receives older nails costing 5 pounds a box, then newer nails costing 8 pounds a box. Under FIFO, the first boxes sold are billed at 5 pounds, regardless of which box the cashier grabs.
Think of it
“Imagine a queue at a popular bakery. The person who arrived first is served first, and the person who arrived last waits at the back. FIFO works the same way for your stock.
Formula
Calculation
Cost of Goods Sold = Units Sold x Oldest Purchase Price
Example:
You buy 100 units at 10 pounds each, then another 100 units at 12 pounds each.
You sell 100 units.
Under FIFO, you use the oldest batch first.
COGS = 100 units x 10 pounds = 1,000 pounds.
The remaining 100 units on your balance sheet are valued at the newer 12 pounds price, totalling 1,200 pounds.Case study
Seen in the real world.
GreenLeaf Beverages, a fictional juice maker, experienced rising fruit costs through the spring. In April, the business purchased 1,000 kilograms of apples at 2 pounds per kilogram. In May, due to a poor harvest, the price rose to 3 pounds per kilogram, and GreenLeaf purchased another 1,000 kilograms.
During May, GreenLeaf sold 1,000 kilograms of apples to juice production. Under the FIFO method, the finance team matched the earliest purchase against this revenue. Therefore, the cost of goods sold for May was calculated using the April price of 2 pounds per kilogram, equalling 2,000 pounds for the batch.
This meant GreenLeaf reported a lower cost of goods sold and a stronger gross profit for May. Meanwhile, the remaining 1,000 kilograms of apples sitting in the inventory ledger were valued at the newer, higher May price of 3,000 pounds. Managing inventory through FIFO gave GreenLeaf a clear, accurate valuation of current stock on the balance sheet while reflecting a logical physical rotation of perishable produce.
Watch out
Common mistakes.
- Assuming FIFO requires you to physically move the oldest items first in your warehouse, when it is actually an accounting assumption.
- Forgetting that higher profits under FIFO during inflation can lead to higher tax bills.
- Failing to update inventory records promptly, which distorts the balance sheet value of remaining stock.
Questions
People also ask.
Do I have to use FIFO physically in my warehouse?
No. FIFO is an accounting method for valuing inventory and costs. While it often matches good physical stock rotation, your actual physical picking order can differ.
Why would a company choose FIFO over other methods?
Companies often choose FIFO because it is widely accepted, easy to understand, and leaves the balance sheet with inventory values that closely reflect current market prices.
Does FIFO result in higher taxes?
During periods of rising prices, FIFO generally results in lower cost of goods sold, higher reported profit, and consequently a higher tax liability compared to LIFO.
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