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What is FIFO Method (Inventory Valuation)?
Grade Level:
Class 12
AI/ML, Physics, Biotechnology, FinTech, EVs, Space Technology, Climate Science, Blockchain, Medicine, Engineering, Law, Economics
Definition
What is it?
The FIFO method (First-In, First-Out) is an inventory valuation technique where we assume that the first goods purchased or produced are the first ones sold. It helps businesses calculate the cost of goods sold and the value of their remaining inventory.
Simple Example
Quick Example
Imagine you have a stall selling fresh fruits. You buy 10 kg of apples on Monday and another 15 kg on Tuesday. Using FIFO, when a customer buys apples, you sell them from the Monday batch first, because those were the 'first in' your shop. Once Monday's apples are finished, you start selling from Tuesday's batch.
Worked Example
Step-by-Step
Let's say a stationery shop buys pens:
1. On April 1st, they buy 100 pens at Rs 10 each.
2. On April 15th, they buy 150 pens at Rs 12 each.
3. By April 30th, they sell a total of 120 pens.
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To calculate the cost of goods sold using FIFO:
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Step 1: The first 100 pens sold will be from the April 1st purchase (First-In).
Cost = 100 pens * Rs 10/pen = Rs 1000.
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Step 2: The remaining 20 pens (120 - 100) sold will be from the April 15th purchase.
Cost = 20 pens * Rs 12/pen = Rs 240.
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Step 3: Total Cost of Goods Sold = Rs 1000 + Rs 240 = Rs 1240.
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Step 4: Remaining inventory = (150 - 20) pens from April 15th purchase.
Value of remaining inventory = 130 pens * Rs 12/pen = Rs 1560.
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Answer: The cost of goods sold is Rs 1240, and the value of remaining inventory is Rs 1560.
Why It Matters
Understanding FIFO is crucial for anyone managing money or resources, from FinTech startups tracking transaction costs to supply chain managers in EV companies optimizing parts inventory. Even in AI/ML, similar 'first-in, first-out' logic can be used to manage data queues, impacting careers in data science and business analytics.
Common Mistakes
MISTAKE: Students confuse FIFO with LIFO (Last-In, First-Out), assuming the newest items are sold first. | CORRECTION: Remember 'FIFO' means 'First-In, First-Out' – the oldest items are sold first.
MISTAKE: Not calculating the remaining inventory's value correctly, often forgetting to subtract the sold items from the correct purchase batch. | CORRECTION: After calculating the cost of goods sold, identify which specific purchase batches still have items left and value them at their original purchase price.
MISTAKE: Applying the average cost to all items, instead of using the specific cost of the 'first in' items. | CORRECTION: FIFO strictly uses the cost of the earliest purchased items until that batch is exhausted, then moves to the next earliest batch.
Practice Questions
Try It Yourself
QUESTION: A grocery store buys 50 kg of rice at Rs 40/kg on May 1st and 70 kg at Rs 45/kg on May 10th. If they sell 60 kg of rice by May 15th, what is the cost of goods sold using FIFO? | ANSWER: Rs 2500 (50 kg * Rs 40 + 10 kg * Rs 45)
QUESTION: A mobile accessories shop has the following stock of headphones: 80 pieces bought at Rs 500 each on June 1st, and 120 pieces bought at Rs 550 each on June 15th. If they sell 100 pieces by June 30th, what is the value of their closing inventory using FIFO? | ANSWER: Rs 55,000 (100 pieces * Rs 550)
QUESTION: A bookshop has 20 copies of 'Wings of Fire' bought at Rs 200 each on July 1st. On July 10th, they buy 30 more copies at Rs 220 each. On July 20th, they sell 25 copies. On July 25th, they buy 15 copies at Rs 230 each. What is the total cost of goods sold and the value of remaining inventory on July 31st using FIFO? | ANSWER: Cost of Goods Sold = Rs 5100 (20 * 200 + 5 * 220); Remaining Inventory Value = Rs 8500 (25 * 220 + 15 * 230)
MCQ
Quick Quiz
Which principle does the FIFO method primarily follow?
Newest items are sold first
Oldest items are sold first
Items are sold at an average cost
Most expensive items are sold first
The Correct Answer Is:
B
FIFO stands for 'First-In, First-Out', meaning the items that were purchased or produced earliest are assumed to be sold first. Options A, C, and D describe other inventory valuation methods or incorrect assumptions.
Real World Connection
In the Real World
From your local kirana store managing perishable goods like milk and bread to large e-commerce platforms like Flipkart or Amazon managing millions of products in their warehouses, FIFO is used daily. It ensures that older stock is moved first, reducing spoilage and obsolescence, and accurately reflecting costs for financial reporting.
Key Vocabulary
Key Terms
INVENTORY: Goods a business holds for sale | VALUATION: The process of determining the monetary value of something | COST OF GOODS SOLD (COGS): The direct costs attributable to the production of goods sold by a company | CLOSING INVENTORY: The value of goods remaining unsold at the end of an accounting period | PERISHABLE GOODS: Items that can spoil or become unusable over time, like fruits or dairy.
What's Next
What to Learn Next
Great job understanding FIFO! Next, you should explore the LIFO (Last-In, First-Out) method. It's another important inventory valuation technique that uses a different assumption, and comparing it with FIFO will deepen your understanding of how businesses manage their finances.
