# Calculating FIFO Depth

The duty cycle of a pulse varies with time as both read and write pointers move. To find the actual latency through the FIFO, the IP block calculates the average of latency pulse duty cycles for an appropriate duration. Once result_ready is asserted, you can read data on the Total FIFO count bus and calculate latency time using the following equation. A higher COGS can lower your gross profit, which in turn, can lower your taxable income. So, it may behoove you to use LIFO if you’re dealing with inflation.

This tax break occurs through lowering net income, subsequently lowering the total cost of taxes a business has to pay. This is because this inventory method assumes that the first items to be sold in that accounting period are the most expensive to produce. Ending inventory is a critical metric for any company that sells physical goods, affecting both the balance sheet and income statement. It’s important to choose a valuation method that matches the company’s needs — the choice can affect the stated value of the company’s assets as well as its profit and the amount of taxes it owes. Inventory management software can help businesses track ending inventory more easily while reducing the potential for manual error. There are multiple methods for calculating ending inventory, each with its own advantages and disadvantages.

## Ending Inventory Methods

Our online fifo and lifo calculator helps you to calculate both lifo valuation and fifo valuation for you ending inventory management. To calculate ending inventory, businesses need to track the number of inventory items they have. This tracking can be performed bookkeeping for startups automatically using inventory management software and when necessary confirm those numbers using physical inventory counts. Companies then choose an appropriate method to assign a value to those items in order to calculate the total value of ending inventory.

Imagine if a company purchased 100 items for \$10 each, then later purchased 100 more items for \$15 each. Under the FIFO method, the cost of goods sold for each of the 60 items is \$10/unit because the first goods purchased are the first goods sold. Of the 140 remaining items in inventory, the value of 40 items is \$10/unit and the value of 100 items is \$15/unit.

## How to calculate FIFO?

When doing this by hand, I always cross out the number of units and write in the remaining amount. Keeping track of the number of units remaining will help to ensure that you take your units from the correct date and calculate ending inventory properly. That would leave 50 units from beginning inventory and 75 from the purchase on January 3rd. Update the list of goods available for sale to reflect what was sold and the additional purchase on January 12.

Here we have not considered the sychnronizing latency if Write and Read clocks are Asynchronous. Greater the Synchronizing latency, higher the FIFO size requirement to buffer more additional data written. So in the question itself, data rate of read operation is specified by the number of idle cycles and for write operation, maximum data rate should be considered with no idle cycle. For worst case scenario, Difference between the data rate between write and read should be maximum. Hence, for write operation maximum data rate should be considered and for read operation minimum data rate should be considered. The sale on January 31 of 80 units would be taken from the purchase on January 3rd and the purchase on January 12th.