FIFO Method: Meaning, Example, and Why It Matters in Inventory Management

The FIFO method is simple in idea: the first stock that comes in is treated as the first stock that goes out.

FIFO stands for First In, First Out. It is used in inventory management and inventory valuation. In operations, FIFO helps older stock move first. In accounting, FIFO assigns older inventory cost to goods sold or consumed first.

For manufacturers, distributors, and traders, FIFO can affect stock value, cost of goods sold, margin, and working capital interpretation. Accounting and tax treatment can vary by applicable standards and jurisdiction, so businesses should consult a qualified accountant or tax advisor before setting or changing inventory valuation policy.

AICAN Optiwise helps businesses maintain structured inventory records so methods like FIFO can be applied on reliable data.

What Is the FIFO Method?

FIFO assumes that the earliest purchased or produced inventory is used or sold first.

If a business buys material in three batches:

• Batch 1: bought first
• Batch 2: bought second
• Batch 3: bought third

Under FIFO, Batch 1 is assumed to move first, then Batch 2, then Batch 3.

This method often makes operational sense for goods with expiry, shelf life, ageing, or quality deterioration risk.

FIFO in Operations

Operational FIFO means physically moving older stock first.

This is useful for:

• Food products
• Chemicals
• Pharma materials
• Packaging material
• Batch-controlled goods
• Items with expiry or retest dates
• Slow-moving items where ageing matters

Operational FIFO reduces the risk of old material sitting unused while newer material is consumed first.

FIFO in Accounting

Accounting FIFO assigns the oldest inventory cost to cost of goods sold or production consumption.

This affects:

• Cost of goods sold
• Gross profit
• Closing inventory value
• Product costing
• Financial reports

Physical movement and accounting valuation should be supported by clean records, even if the business uses ERP to automate calculations.

FIFO Example

A company buys raw material as follows:

• 100 units at Rs. 50 per unit
• 100 units at Rs. 60 per unit
• 100 units at Rs. 70 per unit

Total stock is 300 units.

The company consumes 180 units in production.

Under FIFO, the consumed quantity is costed as:

• First 100 units at Rs. 50 = Rs. 5,000
• Next 80 units at Rs. 60 = Rs. 4,800

Total consumption cost = Rs. 9,800

Remaining stock:

• 20 units at Rs. 60 = Rs. 1,200
• 100 units at Rs. 70 = Rs. 7,000

Closing stock value = Rs. 8,200

This example shows how FIFO uses older cost layers first.

FIFO Formula

FIFO does not have one single formula like EOQ. It works by assigning cost layers in purchase or production sequence.

A simple way to think about it:

Cost of goods issued = cost of oldest available inventory layers used first

Closing inventory = cost of newest remaining inventory layers

ERP systems can calculate this more reliably when item ledgers and stock movements are accurate.

Benefits of FIFO

FIFO has several practical benefits:

• It matches natural stock movement for many goods.
• It helps reduce old or expired stock.
• Closing inventory often reflects recent purchase costs.
• It supports batch discipline.
• It can be easier for teams to understand.
• It works well where older material should be consumed first.

For businesses with perishable or ageing stock, FIFO is often operationally sensible.

Limitations of FIFO

FIFO also has limitations:

• During rising prices, it may show lower cost of goods sold and higher profit.
• Tax or reporting impact depends on applicable rules.
• It requires accurate stock movement records.
• It may not reflect current replacement cost in consumption.
• It can be distorted by duplicate item codes or delayed entries.

The method is only reliable when inventory discipline is reliable.

FIFO vs FEFO

FIFO means First In, First Out. FEFO means First Expired, First Out.

FEFO may be more suitable for goods where expiry date matters more than purchase date. For example, a later-purchased batch may expire earlier than an older batch.

Businesses handling pharma, chemicals, food, or expiry-sensitive products should understand this distinction.

How ERP Supports FIFO

ERP helps apply FIFO by tracking:

• Purchase date
• Batch or lot number
• Quantity received
• Unit cost
• Stock issue date
• Material consumption
• Sales dispatch
• Closing stock
• Item ledger

Optiwise by AICAN helps businesses connect inventory transactions with purchase, production, sales, and finance visibility. That connection makes FIFO records more useful.

Practical FIFO Checklist

Before relying on FIFO, check:

• Item codes are clean.
• Stock inward is recorded on time.
• Issue entries are recorded correctly.
• Batch numbers are captured where needed.
• Units of measurement are consistent.
• Physical stock matches system stock.
• Old stock is visible in reports.
• Accounting policy is reviewed by professionals.

FIFO is not only a costing method. It is a stock discipline.

Founder’s Note

At AICAN, we believe inventory methods become useful only when the shop floor and store records are honest. A method cannot rescue bad data. But with clean records, FIFO can help owners understand stock, cost, and movement better.

AICAN built Optiwise to make those records part of daily work, not a month-end reconstruction.

FAQs

What is the FIFO method?

FIFO means First In, First Out. It assumes the earliest inventory is sold or consumed first.

How is FIFO used in inventory valuation?

FIFO assigns the oldest inventory cost to goods sold or consumed first, while newer costs remain in closing inventory.

Is FIFO useful for perishable goods?

Yes. FIFO helps older stock move first, though FEFO may be better when expiry date is more important than purchase date.

Does FIFO affect profit?

Yes. During rising prices, FIFO can show lower cost of goods sold and higher profit compared with methods using newer costs first.

How does Optiwise support FIFO?

Optiwise by AICAN supports structured inventory tracking, item ledgers, batch details, and stock movement records that make FIFO easier to manage.