You can use the following formulas to use an IF function with negative numbers in Excel:

**Method 1: Use IF Function to Check if Cell Contains Negative Number**

=IF(B2<0, "Yes", "No")

This formula will return “Yes” if the value in cell **B2** is negative (i.e. less than zero) – otherwise it will return “No.”

**Method 2: Use IF Function to Check if Cell is Negative, Zero or Positive**

=IF(B2=0,"Zero",IF(B2>0,"Positive", "Negative"))

This formula will return the following values:

- “Zero” if cell
**B2**is equal to zero. - “Positive” if cell
**B2**is a positive value. - “Negative” if cell
**B2**is a negative value.

The following examples show how to use each formula in practice with the following dataset in Excel:

**Example 1: Use IF Function to Check if Cell Contains Negative Number**

We can type the following formula into cell **C2** to return “Yes” if the value in cell **B2** is negative or return “No” otherwise:

=IF(B2<0, "Yes", "No")

We can then click and drag this formula down to each remaining cell in column C:

The formula returns “Yes” for each row where the value in the Net Sales column is negative and “No” for each row where the value is positive.

**Example 2: Use IF Function to Check if Cell is Negative, Zero or Positive**

We can type the following formula into cell **C2** to return “Zero”, “Negative” or “Positive” depending on the value in cell **A2**:

=IF(B2=0,"Zero",IF(B2>0,"Positive", "Negative"))

We can then click and drag this formula down to each remaining cell in column C:

The formula returns “Zero”, “Negative” or “Positive” depending on the corresponding value in column A.

**Additional Resources**

The following tutorials explain how to perform other common tasks in Excel:

Excel: How to Use IF Function with Multiple Conditions

Excel: How to Create IF Function to Return Yes or No

Excel: How to Use an IF Function with Range of Values