Complete FIFO and LIFO Guide in Warehouse Management 2026

Managing your warehouse can feel like a massive headache when orders are constantly flying in from Shopee, TikTok and other online Shop! If you are tired of losing track of what is actually sitting on your shelves, picking the right stock system is exactly where you need to start.

Understanding how your items move using FIFO and LIFO method will help you squeeze more profit out of your small shop-lot space!

What Are FIFO and LIFO Inventory Methods?

What Is FIFO (First In, First Out)?

Let’s look at the FIFO inventory method first, which is pretty straightforward for your daily operations. You basically pick and ship the oldest items on your shelves before you touch the new stuff that just arrived from your supplier. Think of it like buying milk at the grocery store, where you grab the carton at the front so your milk doesn’t expire!

• Definition: Your oldest inventory items are picked and sold first.
• Core principle: It creates systematic stock rotation so your products do not sit around gathering dust.
• Physical implementation: Loading is done at one end of your rack, and unloading happens at the other end.
• Ideal for: Perishable goods, cosmetics, or any products you sell with a strict shelf life.

For warehouses using management systems like 8Stock, FIFO can significantly enhance shelf life management and ensure efficient inventory turnover.

What Is LIFO (Last In, First Out)?

On the flip side, the LIFO inventory method means the newest boxes that just got dropped off are the first ones you ship out. You don’t have to dig through your racks to find the older stock, which saves your packing staff valuable time. It is exactly like stacking t-shirts in a box, where you just pull from the top layer when your new order comes in.

• Definition: The newest inventory items are picked and shipped to your customers first.
• Core principle: You prioritize the most recently arrived batches of products.
• Physical implementation: Both loading and unloading are done from the exact same aisle.
• Ideal for: Non-perishable stuff like hardware or phone cases that do not lose value over time for your business.

Systems like 8Stock, LIFO can be effectively utilized as part of a cost management strategy, particularly in industries experiencing inflation.

How Do FIFO and LIFO Work in Practice?

Understanding the FIFO Process

To make FIFO work in your small warehouse, you need a workflow where goods enter one side and exit the other. This setup connects your storage and packing areas smoothly, helping you maintain good inventory tracking for your daily operations. The valuation of your remaining stock ends up reflecting current market prices more accurately.

• First items stored are the first items retrieved from your warehouse shelves.
• Goods move in a straight line, optimizing your whole packing flow.
• For example, if you buy 10 items at RM10 in January, and 10 items at RM20 in April.
• Selling 15 items under FIFO costs you RM250 (10xRM10 + 5xRM20), leaving your newer, more expensive stock on the shelf.

Understanding the LIFO Process

When you use LIFO, the most recently received items are grabbed first without worrying about your older stock in the back. Your packing staff will just work from one single aisle, which really cuts down on their daily walking distance. The newer inventory is simply more accessible for your team to pack those urgent next-day deliveries.

• Most recent stock is picked first, leaving your older items at the back.
• Both loading and unloading tasks occur at the same spot to save operator travel time.
• Using the same example above, selling 15 items costs RM350 under LIFO (10xRM20 + 5xRM10).
• Your remaining inventory value is kept lower, which is a common inventory cost accounting practice.

Key Differences Between FIFO and LIFO

You can see how these two methods directly impact your daily warehouse flow and labor costs. Depending on what you sell, your choice will affect your Cost of goods sold COGS and your taxes at the end of the year. Here is a simple table to help you compare the main differences between the two methods.

Aspect	FIFO	LIFO
Sales Order	Your first purchased items are sold first.	Your last purchased items are sold first.
Obsolete Inventory	Prevents obsolescence and deterioration for you.	You risk older items becoming obsolete.
Pricing Impact	Protects you from market price fluctuations.	Your COGS is closer to current market prices.
Tax Liability	Gives you higher taxable profit during inflation.	Lowers your taxable profit during inflation.
Application	Use for perishable goods and high turnover.	Use for non-perishable goods and low turnover.
Space Efficiency	Requires two-sided access for your staff.	You only need a single-aisle loading area.
Warehouse Complexity	You need moderate to complex systems.	Simple block storage is enough for you.

When Should You Use FIFO?

Industries Using FIFO

If you run a business selling food or skincare, you definitely need to rely on FIFO to keep things fresh. It is the standard approach for companies that handle items with a limited shelf life. You will also see this used by any retail operations with a very rapid inventory turnover rate.

• Grocery stores and your local supermarkets.
• Pharmaceutical and medical supply companies.
• Food and beverage businesses.
• Any business requiring strict regulatory traceability.

FIFO Advantages

The biggest relief for your business is that older items are picked first, ensuring product quality and expiration compliance. You minimize the value loss from aging or damage, which directly reduces your inventory write-downs over time. Plus, it easily integrates into your existing workflows using standard racking equipment.

• Freshness assurance: You guarantee product quality for your buyers.
• Reduced waste: You minimize losses from aging or rusted products.
• Better financial reporting: Your inventory value matches current market prices.
• Traceability: You can easily trace batches if a customer complains.

FIFO Disadvantages

Let’s be honest, nothing is perfect, and you might notice a delay in receiving cash for your high-margin products. The most profitable items you just bought might not ship first because of your strict rotation rules. Sometimes, this can artificially inflate your gross profits if your supplier costs change drastically.

When Should You Use LIFO?

Industries Using LIFO

You might want to consider LIFO if you are selling bulky building materials or heavy hardware supplies online. It is a very practical method for operations that push out large volumes of uniform products. If your main goal is optimizing your warehouse space utilization in a tight shop-lot, this works wonders.

• Building materials suppliers like ceramics or stone.
• Hardware and raw goods distributors.
• Companies selling non-perishable inventory with low turnover.
• Operations prioritizing space efficiency over stock rotation.

LIFO Advantages

The main benefit for your daily grind is the reduced travel distance for your staff packing orders. You can get higher space occupancy because using only one aisle maximizes your small warehouse capacity. It is also a great way to lower your taxable profits when supplier prices keep going up.

• Reduced travel distances: Your team works in the same aisle for everything.
• Higher space occupancy: You pack more boxes into a smaller room.
• Tax benefits during inflation: Higher COGS results in a lower taxable profit for you.
• Faster stacking: You can just stack products as soon as they arrive.

LIFO Disadvantages

You must be careful with older items deteriorating at the back of your shelves while you only sell the new stuff. It requires much more complex accounting, which might give you a headache when doing your yearly books. It is also important for you to know that LIFO is generally restricted by international accounting standards.

Warehouse Systems and Equipment for FIFO and LIFO

Storage Systems Supporting FIFO

Setting up a First In First Out warehouse requires you to design a proper flow-through layout. You might need to invest in pallet racking with a specific front-in-front-out design so your staff doesn’t get confused. Shelving with separate entry and exit points is absolutely crucial for your workflow to run smoothly.

• Flow-through warehouse layouts with conveyor systems.
• Mobile racking systems that allow easy product movement.
• Automated storage and retrieval systems if you have the budget.
• Shelving units built with distinct loading and picking sides.

Storage Systems Supporting LIFO

For a Last In First Out warehouse, you can actually get away with a much cheaper setup. Simple block storage with basic pallet stacking is usually more than enough for your non-perishable goods. You do not need to install complex shelving because a single-aisle configuration works perfectly fine for your space.

• Basic block storage with simple stacking.
• Drive-in compact pallet racking systems.
• Simplified racks without complex requirements.
• Setups suited for large volumes of identical materials.

Financial and Tax Implications

Impact on Cost of Goods Sold (COGS)

Understanding how these methods affect your books is super important for your cash flow management. If you use FIFO, your COGS is based on the oldest, usually cheaper, inventory costs. But if you use LIFO, your COGS is based on the newest prices, which better reflects your current market realities.

Tax Considerations

Nobody likes paying more tax than they have to, so you need to look at your tax implications inventory closely. FIFO usually results in higher profits during inflation, which unfortunately increases your tax liability to LHDN. LIFO will give you higher COGS and lower taxable profits, though it can complicate things if your business expands internationally.

• FIFO: Increases your tax liability when costs are rising.
• LIFO: Reduces your tax liability during inflationary periods.
• IFRS compliance: LIFO is not allowed under International Financial Reporting Standards.
• Accounting alignment: Your physical picking must match your accounting methods.

Financial Statement Impact

The financial reporting inventory method you choose will completely change how your balance sheet looks. FIFO gives you a larger asset value, making your business look more profitable to banks if you need a loan. Try asking your accountant to prepare reports using both methods so you can see the clear difference yourself.

How to Choose Between FIFO and LIFO

Decision Factors

You have to look at your specific product type and shelf life before making a final choice. If you are dealing with high turnover rates and limited space, your decision might already be made for you. Take a close look at your warehouse operational costs to see what makes the most financial sense.

• Product type: Pick FIFO for perishables and LIFO for non-perishables.
• Inventory turnover: High turnover aligns well with FIFO.
• Warehouse space: LIFO saves you a ton of space with single-aisle setups.
• Regulatory requirements: You must use FIFO if you want IFRS compliance.

Implementation Best Practices

To get started, you must ensure your accounting method matches how your staff actually picks the items. You should thoroughly train your staff on the chosen system so they don’t mess up your carefully planned warehouse picking strategies. Picking the right software will save you countless hours of manual data entry at night.

• Assess your current warehouse layout before changing anything.
• Train your team clearly on the new system requirements.
• Select inventory management software that supports your preferred method.
• Monitor your new system regularly to fix any early bottlenecks.

Final thoughts

Choosing between FIFO and LIFO is a necessary step in professionalizing your small e-commerce business. You need to carefully look at your product types and warehouse setup before deciding which path to take. FIFO remains the easiest choice for most of your retail needs, while LIFO offers some nice space-saving perks for heavy goods.

Whatever method you choose, it must be supported by a solid system so you are not relying on messy whiteboards and spreadsheets. Once your inventory strategy is locked in, you will finally stop worrying about overselling and start focusing on scaling your revenue. If you want to see how easy it is to manage your stock automatically, you can always request an 8Stock demo today to see it in action.

Keep pushing forward with your business, and happy selling!