On this page is a net interest margin calculator for banks (and bank-like entities which earn a credit spread). Enter the amount of interest or investment income, interest or investment expenses, and the current and last period earning assets to estimate the net interest margin.

Net Interest Margin Calculator

What is the net interest margin?

For a bank, the net interest margin is a comparison between what a bank earns between interest it pays to its lenders (deposits and similar) and the amount it earns on investments elsewhere. By comparing net interest margin across banks, its one way to rank a bank's performance with the current interest rate conditions. Removing interest expense from the numerator leaves you with the gross yield on earning assets, which is the weighted average yield on earning assets.

A positive net interest margin shows that a bank is earning more money in interest than its cost of funding its investments.

Net interest margin isn't the only way a bank makes money, of course. Non-interest income can be significant, for example fees, origination costs, membership costs, and other charges may make up a significant amount of a bank's revenue.

Bank Net Interest Margin Formula

The net interest margin formula is:

net\ interest\ margin=\frac{interest\ income-interest\ expense}{average\ earning\ assets}

Where:

  • Interest Income – Interest and investment income earned by the bank.
  • Income Expense – Costs to earn the interest and investment income.
  • Earning Assets – The average of the current and previous period's earning assets. (Make sure you match the period with the income and expenses)

Other Banking Ratio and Valuation Calculators

These other tools help you value banks:

Here is a receivables turnover calculator, which computes how quickly a company turns over its receivables, or sales extended on credit to customers. Enter the company's net credit sales (or, optionally, top line sales) and two period's accounts receivable to compute the ratio.

Accounts Receivable Turnover Calculator

What is the receivables turnover ratio?

The receivables turnover ratio is a liquidity ratio which measures how quickly and efficiently a company turns credit sales into cash. The canonical measure uses net credit sales (sales on credit netting out sales returns and allowances), but for companies which do most sales on credit using revenue will work decently as well.

The receivables turnover ratio is related to the average collection period, which estimates how long the weighted average customer takes to pay for goods or services.

Receivables Turnover Ratio Formula

The receivables turnover ratio formula is:

receivables\ turnover\ ratio=\frac{net\ credit\ sales}{average\ accounts\ receivable}

Where:

  • Net Credit Sales – Sales from credit, net of returns and allowances. Alternatively, substitute top-line revenue.
  • Average Accounts Receivable – The average accounts receivable between the current period and the first period used to calculate the net credit sales (or revenue) above.

Other Liquidity Calculators

Liquidity ratios and calculations guess how easy it would be for a company to deal with its current debt and liabilities. See more liquidity tools here:

Below is an operating cash flow ratio calculator which estimates how many times over a company could pay off current liabilities in a given period using only operating cash flows. Enter a company's operating cash flow and current liabilities to compute the ratio.

Operating Cash Flow Ratio Calculator

What is the operating cash flow ratio?

The operating cash flow ratio shows the multiple of times a company could pay off its current liabilities using cash flows from a given period. Unlike balance sheet based liquidity ratios like the quick ratio and current ratio, the cash flow ratio shows how quickly the company could pay off its short term debts with new money coming in (both held static).

A value below 1 – especially if you are looking at a year of cash flows – could mean the company will need to find other means to pay short term debt. Note that large capital expenditures paid in the current period can temporarily depress the ratio, however. You should normalize your cash flows to determine how well current liabilities are covered by cash flow.

Operating Cash Flow Ratio Formula

The operating cash flow ratio formula is:

operating\ cash\ flow\ ratio=\frac{operating\ cash\ flow}{current\ liabilities}

Where:

  • Operating Cash Flow – Cash flow from operations, on the Cash Flow Statement.
  • Current Liabilities – Liabilities and leases/rent due in the near term, from the Balance Sheet.

Other Liquidity Calculators

Liquidity ratios and calculations guess how well a company can deal with its current debt and liabilities. See more liquidity tools here:

Here is an average collection period calculator which estimates how quickly the company is able to collect on its accounts receivable. Enter the company's Accounts Receivable and Revenues and the tool will estimate how quickly the company collects.

Average Collection Period Calculator

What is the average collection period?

The average collection period refers to how long – in days – it takes for a company to collect on its accounts receivable. Accounts Receivable is the total sum of money owed by customers (businesses or consumers) currently extended on credit, and by comparing it to total sales you can quickly guess how efficiently the company collects on these debts.

Although you can calculate it for a quarter, for most businesses it's safer to look at a full year to compare fairly due to seasonality or accounts receivable booked in previous quarters.

Average Collection Period Formula

The average collection period formula is:

average\ collection\ period=\frac{accounts\ receivable}{revenue}*days\ in\ period

Where:

  • Accounts Receivable – Money owed the company on credit for goods or services. From the balance sheet in current assets
  • Revenue – Top-line sales the company made in the current period. From the income statement.
  • Days in Period – How many days you are looking at for the reporting (that is: how many quarters is revenue summed across, representing how many days?)

Other Liquidity Calculators

Liquidity ratios and calculations guess how well a company can deal with its current debt and liabilities. See more liquidity tools here:

Here is an inventory turnover ratio calculator which also estimates the number of days of sales that are held in inventory. Enter the Cost of Goods Sold in a given period, and the Inventory held in Current Assets and the beginning and end of the period to compute the inventory turnover.

Inventory Turnover Ratio Calculator

What is inventory turnover?

Inventory turnover or the inventory turnover ratio is a number denoting how quickly a company sold and replenished its inventory in a given period. It also allows you to get an estimate of the number of days of sales the current inventory supports if the company doesn't replenish its inventory.

There's no good or bad number in a vacuum for inventory turnover (although more inventory turnover means a company could operate with less working capital if appropriate). Compare the number you compute with other peer companies to get an idea for how a company compares.

Inventory Turnover Formula

The inventory turnover formula is:

inventory\ turnover=cost\ of\ goods\ sold/average\ inventory

Where:

  • Cost of Goods Sold – Cost of Goods Sold or COGS off the income statement. Some practitioners use top-line revenue, but COGS should better approximate input costs for inventory.
  • Average Inventory – The average inventory at the beginning and end of a period. The tool computes it as the inventory last period plus the inventory in the current period, divided by 2.

Once you have the inventory turnover number, you can easily estimate how many days of sales the current inventory could support.

Days of Sales in Inventory Formula

The days of sales in inventory formula is:

days\ of\ sales\ in\ inventory=days\ in\ period/inventory\ turnover

Where:

  • Days in Period – The number of days in the period (if using annual reports, the tool internally uses 365 days, vs. 91 for quarterly)
  • Inventory Turnover – The average inventory at the beginning and end of a period. The tool computes it as the inventory last period plus the inventory in the current period, divided by 2.

Once you have the inventory turnover number, you can easily estimate how many days of sales the current inventory could support.

Other Liquidity Calculators

All liquidity calculators give a temperature check on a company's ability to stay liquid by paying off creditors on liabilities due in the next year. Here are some other tools showing liquidity ratios:

Below is a working capital calculator. See how much a company has to immediately invest in its business and growth by netting our current assets and current liabilities.

Working Capital Calculator

What is a company's working capital?

Working capital is the short-term funds a company can use to fund its day-to-day operations or dedicate to growth. It is computed by netting out the current assets and current liabilities on a company's balance sheet. It's closely linked to the current ratio or working capital ratio, which shows the proportion of current assets and liabilities.

Negative working capital is when current liabilities are higher than current assets. It's not necessarily a bad situation portending doom – companies that turn over inventory extremely quickly and have good payment terms on inputs can show persistent negative working capital.

Working Capital Formula

The working capital formula is:

working\ capital=current\ assets-current\ liabilities

Where:

  • Current Assets – Short-term assets listed on the company's balance sheet
  • Current Liabilities – Short-term liabilities listed on the balance sheet

Other Liquidity Calculators

Liquidity ratios and calculations help estimate how a company can deal with its short term debt and liabilities. See other tools here:

Below is a cash ratio calculator. Enter a company's cash and cash equivalents current liabilities to compute the cash ratio.

Cash Ratio Calculator

What is a company's cash ratio?

A company's cash ratio is one of the most aggressive liquidity ratios, and measures a company's ability to meet short term liability needs using only cash and cash equivalents. While other ratios like the quick ratio allow for selling of marketable securities and receiving owed payments, the cash ratio only allows immediately accessible cash.

A ratio of 1 or greater means the company can meet its short term needs with its cash. A ratio less than 1, however, doesn't mean the company is illiquid necessarily – compare it to some of the other liquidity ratios in the links below to double check.

Cash Ratio Formula

The quick ratio formula is:

cash\ ratio=\frac{cash\ \&\ cash\ equivalents}{current\ liabilities}

Where:

  • Cash and Cash Equivalents – short-term assets which are as good as cash, or other names for cash (like "petty cash")
  • Current Liabilities – short-term liabilities listed on the balance sheet

Other Liquidity Calculators

Liquidity ratios show how easily a company can meet its near term debts. See other tools:

Below is a quick ratio calculator. Enter a company's cash and cash equivalents, accounts receivable, and other marketable securities, then enter current liabilities to compute the quick ratio.

(The quick ratio is used interchangeably with the acid test ratio. However, they will differ in certain situations).

Quick Ratio Calculator

What is a company's quick ratio?

The quick ratio is an aggressive liquidity ratio and check of a company's ability to pay for short-term leases and liabilities by only considering easily saleable assets such as cash and marketable securities. It also allows for accounts receivable.

The quick ratio is equivalent to the acid test ratio in GAAP accounting, which approaches the same number by netting certain assets from current assets. In certain situations in other accounting regimes, the two may differ; consider a company with hard or impossible to liquidate current assets like prepaid taxes or insurance contracts listed as current assets. For the most part, though, it's interchangeable with the acid test ratio.

Like other liquidity ratios, a ratio of 1 or above means the ratio indicates the company can meet its current liquidity needs.

Quick Ratio Formula

The quick ratio formula is:

quick\ ratio=\frac{cash\ \&\ cash\ equivalents+accounts\ receivable+marketable\ securities}{current\ liabilities}

Where:

  • Cash and Cash Equivalents – short-term assets which are as good as cash, or other names for cash (like "petty cash")
  • Accounts Receivable – cash (or equivalents) owed to the firm, listed on the balance sheet
  • Marketable securities – non-cash securities which could be quickly sold to cash in a liquidity crunch. Also listed on the balance sheet
  • Current Liabilities – short-term liabilities listed on the balance sheet

Other Liquidity Calculators

Liquidity ratios show how easily a company can meet its near term debts. See other tools:

Below is an acid test ratio calculator. Enter a company's current assets, inventories, prepaid costs, and current liabilities to see the acid test ratio.

(The acid test ratio is sometimes used interchangeably with the quick ratio. However, this tool is more aggressive than our quick ratio tool).

Acid Test Ratio Calculator

What is a company's acid test ratio?

An acid test ratio is a liquidity ratio that models a company's ability to pay its liabilities due in the following 12 months using assets currently on the books minus hard (or impossible) to liquidate assets such as inventory and prepaid liabilities. A number above 1 shows that a company could meet its short term liquidity needs in its current state.

In GAAP accounting, it's the equivalent of the quick ratio, which attempts to strip out assets that can be sold quickly to pay off current liabilities. In other accounting systems or small company (or non-compliant) books, you should attempt to strip out other not-easily-to-liquidate current assets, for example if companies list office supplies, prepaid insurance contracts, prepaid taxes, biological assets, and so-on.

Note that, for the most part, the acid test ratio and quick ratio are used interchangeably.

Acid Test Ratio Formula

The acid test ratio formula is:

acid\ test\ ratio=\frac{current\ assets-inventories-prepaid\ costs}{current\ liabilities}

Where:

  • Current Assets – short-term assets listed on the company's balance sheet
  • Inventories – currently held inventories, considered slow assets (and netted out of the ratio). Listed on the balance sheet
  • Prepaid costs – already paid costs for goods and services in future quarters. As these are impossible to liquidate quickly (or at all?), they are netted out of the acid test ratio. Listed on the balance sheet
  • Current Liabilities – short-term liabilities listed on the balance sheet

Other Liquidity Calculators

Liquidity ratios guess how well a company can handle debts and liabilities due in the next twelve months. Try some other liquidity calculators here:

Below is a current ratio calculator or working capital ratio calculator. Find a company's current assets and current liabilities from its balance sheet, and the tool will compute a current ratio.

Current Ratio Calculator

What is a company's current ratio or working capital ratio?

A current ratio is a liquidity ratio that gives an at-a-glance check on a company's ability to pay its liabilities due in the following 12 months using assets currently on the books. It shows a company's ability to pay short-term liabilities without bringing in additional cash. It's also sometimes called the working capital ratio.

A current ratio of 1 or higher means a company can likely meet its short term liquidity needs, even without further cash.

Current Ratio Formula

The current ratio formula is:

current\ ratio=\frac{current\ assets}{current\ liabilities}

Where:

  • Current Assets – Short-term assets listed on the company's balance sheet
  • Current Liabilities – Short-term liabilities listed on the balance sheet

Other Liquidity Calculators

All liquidity calculators give a temperature check on a company's ability to stay liquid by paying off creditors on liabilities due in the next year. Here are some other tools showing liquidity ratios:

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