Bookkeeping – Debits and Credits in Cost of Sales Accounts (Lesson 7)

Cost of Sales Accounts

Cost of sales customarily carries debit entries in the ledger.

The Purchases Journal keeps track of the entries related to the cost of sales (cost of goods sold) accounts. As with all journals, the entries are in chronological order by date and identify both the debit and credit sides of the equation. In this case, cost of sales is customarily recorded via debits. The offsetting credit is usually to either the cash account for those materials directly purchased from a supplier or on an account of a supplier. For those on account from a supplier the entry is to Accounts Payable. Just like entries via the sales journal and on account to customers, there are subsidiary ledgers by vendor for purchases on accounts.

 

Gross Profit

A very common mistake in bookkeeping is the misunderstanding of the function of the cost of sales accounts. In almost every industry, financial comparisons are made between similar operations to evaluate performance. The most common ratio or evaluation tool is the ‘Gross Profit Percentage’. Gross profit refers to the value of revenue remaining after subtracting cost of sales. The gross profit percentage is merely the dollar gross profit value divided by the net revenue value.

This ratio or percentage is quantifiable different for every industry. For example, in the service industry the gross profit should not be less than 40%. This means the cost of services rendered is around 60% of all net revenue. 

In auto repair, the gross profit percentage is generally higher sometimes hitting 55%. For some industries, it is not uncommon for the gross profit percentage to be as low as 15%. A good example of this is the automotive retail business. The gross margin generated from each auto sold is relatively low. By the time the dealership pays for the car, pays the commission to the sales representative, pays the interest on the floor plan and more, the gross profit drops to a very low percentage of net revenue.

The purpose of the cost of sales accounts is to group together those direct costs related to the product or service sold to the customer. Then it is easier to compare the overall performance of your business to others in a similar business.

Different Names

Cost of sales has several different names. The most common title is of course – Cost of Goods Sold. This is the title almost everybody has heard of in business. It is used in the retail industry, but other industries used different titles to refer to the same concept. The following are some examples:

  • Costs of Construction – residential, commercial and industrial construction
  • Cost of Meals Served – restaurants, caterers, mobile vending
  • Cost of Departmental Operations – hospitality industry specifically hotels and resorts

If you desire to gain a more thorough understanding than read:  Cost of Sales – Various Formats.

For the purposes of this lesson, the more generic title ‘Cost of Salesis used.

Various Accounts

The customary value for cost of sales accounts is a debit value. If the value were credit based it would increase the overall profitability of the business operation just as sales are credit based (see Lesson 6).  For those of you new to accounting,  cost of sales accounts can have several different sub-accounts. The most commonly used subaccount is material or purchases. When you think of purchases think of buying some retail widget and then reselling this widget for a profit. This is why the ‘Purchases Journal’ is the preferred journal for posting cost of sales entries.

Other accounts include the following and their corresponding journal:

  • Labor – payroll journal
  • Shipping – shipping journal
  • Subcontractors – most often kept in the purchases journal or a separate journal is used
  • Equipment Rental – purchases journal
  • Other/Supplies – purchases journal

A very common mistake made by novice bookkeepers is thinking that Cost of Sales accounts never have credit values entered in them. This is wrong. Remember, every type of account can have either a debit or credit entered. Each type of account ends with a more common side of the entry (debit or credit). For example, asset types of accounts should end with debit values; liability accounts customarily end with credit values. For Cost of Sales, debit values are normal.

Credit entries in Cost of Sales accounts usually occur as a function of customers returning an item. When this happens, the entry starts out in the sales journal with a debit to ‘Returns’ and a credit to the cash handed back to the customer. At the same time, the material return is recorded via an inventory journal or a returns journal with a credit to the purchases account for the returned item and a debit to inventory (an asset type of an account). Credits do exist in Cost of Sales but are more complicated and uncommon. This is covered in the advanced lessons of bookkeeping, Volume II and III. For now, you need to understand that debits can exist in Cost of Sales accounts.

Summary – Cost of Sales Accounts

Debits and Credits are merely values assigned to accounts and offset each other in order for the dual entry system to work effectively. With Cost of Sales type of accounts debit balances are the traditional ending balance. Debit entries do exist but are rare. In cost of sales types of accounts debits increase the balance and credits decrease the net cost of sales. ACT ON KNOWLEDGE.

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