Excel VBA Or Operator: How It Works and When to Use It

In Excel VBA, the Or operator combines conditions and returns True when at least one condition is True. It can also perform a bitwise operation on numbers, so the meaning depends on the values you use.

What the VBA Or operator means

Most VBA users encounter Or in an If statement. For example, a rule might flag an order if it is blocked or its balance is negative. If either test is true, the combined condition is true; if both are false, the combined condition is false.

For Boolean values, its truth table is straightforward:

True Or True evaluates to True.
True Or False evaluates to True.
False Or True evaluates to True.
False Or False evaluates to False.

That is inclusive OR: both conditions may be true, and the overall result is still true. This differs from exclusive OR, which is true only when exactly one condition is true. VBA has a separate Xor operator for that case.

Basic syntax and a practical example

The general pattern is condition1 Or condition2. In a decision statement, place that expression after If and before Then. For example, the following condition is true when the status is Blocked or the balance is below zero:

If status = "Blocked" Or balance < 0 Then
    ' Handle the item that needs review.
End If

Each side of Or is a condition that can be evaluated as true or false. Comparisons such as score < 60 and status = "Late" produce Boolean results. You can combine more than two conditions, too:

If status = "Blocked" Or balance < 0 Or overdueDays > 30 Then
    ' Apply the review rule.
End If

This rule is true if any one or more of its three conditions is true. When the rule gets longer, use parentheses and line continuations to make the intended groups visible. Clear formatting makes it easier to verify a business rule and spot a misplaced operator.

Using Or in a VBA macro

Here is a small macro example. It assumes a worksheet named Data, with status values in column B and numeric balances in column C, starting on row 2. It writes Review in column D for rows meeting either condition. The numeric check prevents a text value in column C from being converted to a number.

Save a copy of the workbook before running a macro. VBA changes cannot be reversed with Ctrl+Z, so the usual Excel undo history is not a safety net for these edits.

Sub FlagRowsForReview()
    Dim ws As Worksheet
    Dim lastRow As Long
    Dim rowNum As Long
    Dim status As String
    Dim balance As Double

    ' Use the worksheet containing the source data.
    Set ws = ThisWorkbook.Worksheets("Data")
    lastRow = ws.Cells(ws.Rows.Count, "B").End(xlUp).Row

    For rowNum = 2 To lastRow
        status = CStr(ws.Cells(rowNum, "B").Value)

        If IsNumeric(ws.Cells(rowNum, "C").Value) Then
            balance = CDbl(ws.Cells(rowNum, "C").Value)
            If status = "Blocked" Or balance < 0 Then
                ws.Cells(rowNum, "D").Value = "Review"
            End If
        End If
    Next rowNum
End Sub

To try it, open the Visual Basic Editor with Alt+F11 on Windows, choose Insert > Module, and paste the code into the module. Check that the sheet name and columns match your workbook before running it. On a Mac, the Visual Basic Editor can be opened from the Developer tab or Tools > Macro > Visual Basic Editor; keyboard shortcuts can vary by keyboard and Excel settings. Excel for the web can open workbooks containing VBA but cannot create, run, or edit VBA macros.

Or does not short-circuit

A key VBA detail is that Or does not short-circuit. VBA evaluates both sides of the expression, rather than stopping as soon as the first condition is true. This matters when the second expression could cause an error or has a side effect.

For instance, do not rely on a condition like denominator = 0 Or numerator / denominator > 2 to protect against division by zero. Even if the first test is true, VBA still evaluates the other side. Instead, use nested decisions so the division only occurs after the denominator has been checked:

If denominator = 0 Then
    ' Handle the zero-denominator case.
ElseIf numerator / denominator > 2 Then
    ' Handle the result above 2.
End If

The same caution applies when one test verifies that an object exists and another accesses a property on it. A combined expression such as object Is Nothing Or object.Name = "Report" is not a safe guard: VBA may evaluate the property access even when the object is Nothing. Put the object check in its own If block, then inspect the property only in the branch where the object is available.

Combining Or with And, Not, and parentheses

You can combine Or with other logical operators, but precedence can make an unparenthesized expression hard to read. In VBA, Not is evaluated before And, and And before Or. Comparisons are evaluated before these logical operations. Thus, an expression containing both And and Or can group differently from what a reader casually expects.

Suppose an order should be flagged if it is blocked, or if it is both overdue and unpaid. Write the grouping explicitly:

If status = "Blocked" Or (isOverdue And isUnpaid) Then
    ' Flag the order.
End If

Without the parentheses, precedence still groups the And operation before Or, but the parentheses communicate the rule directly and protect it if someone later edits the expression. Add parentheses whenever the grouping is important, especially for conditions used in approvals, data cleaning, or reports.

Logical Or versus bitwise Or

VBA uses the same Or keyword for Boolean logic and for bitwise operations on numeric values. In Boolean logic, the question is whether either condition is true. In a bitwise operation, VBA compares the binary representation of the numbers and sets each result bit when that bit is set in either input.

For example, the decimal numbers 6 and 3 have binary forms 0110 and 0011. Combining corresponding bits with OR produces 0111, which is decimal 7. This behavior is useful when working with bit flags, where individual bits represent settings or states. It is not the same as ordinary arithmetic addition: 6 plus 3 is 9, while the bitwise OR result is 7.

Boolean values in VBA have numeric representations: False is 0 and True is -1. That representation is another reason to avoid mixing numeric values and Boolean conditions casually. If your goal is a readable yes-or-no decision, compare values explicitly and combine the resulting conditions. Use numeric bitwise operations only when you deliberately need to manipulate flags or binary values.

VBA Or compared with Excel’s OR function

Excel worksheet formulas and VBA code have related but distinct syntax. A worksheet formula uses the OR function; VBA uses the Or operator between expressions. The worksheet function returns TRUE if any supplied logical test is true, much like a Boolean VBA expression.

With a status in A2 and a balance in B2, if A2 contains Blocked and B2 contains -12, this formula returns TRUE because the balance is below zero:

=OR(A2="Blocked",B2<0)

In VBA, the corresponding condition would be written using variables or cell references and the operator, not the worksheet function syntax. For example, If status = "Blocked" Or balance < 0 Then is VBA code; putting that text into a worksheet cell will not make it a valid worksheet formula. Conversely, =OR(...) is a worksheet formula and is not the syntax for an If statement in VBA.

Common errors and ways to make conditions clearer

Many problems with Or are not syntax errors. The code runs, but the condition expresses a broader or narrower rule than intended. Review the following points when a result seems wrong:

Check the business meaning. Or means at least one condition, not all conditions. If every test must be true, use And.
Check the grouping. Use parentheses around mixed And and Or expressions so the rule is apparent.
Check data types. A cell that looks numeric might contain text, an error value, or an empty value. Validate inputs before converting or comparing them.
Do not use it as a guard. Both sides are evaluated, so a test on the left will not shield a risky expression on the right.
Distinguish inclusive from exclusive logic. If exactly one condition must be true, consider Xor, not Or.

During debugging, assign complicated conditions to clearly named Boolean variables or evaluate one test at a time in the editor. This helps identify which comparison is producing an unexpected result. It is also easier for a future maintainer to understand a rule such as isBlocked Or hasNegativeBalance than a long chain of comparisons with unexplained values.

Frequently Asked Questions

What does Or mean in Excel VBA?

It combines conditions and is true when at least one condition is true. VBA also uses it for bitwise operations when the operands are numeric.

Does VBA Or stop evaluating after the first true condition?

No. VBA evaluates both sides of an Or expression. Use separate, nested If statements when a later test could fail or should only run after a check succeeds.

What is the difference between Or and And in VBA?

Or is true when one or both conditions are true. And is true only when both conditions are true.

How do I use OR in an Excel cell formula?

Use the worksheet function OR, for example =OR(A2="Blocked",B2<0). That is worksheet syntax; VBA conditions use the Or operator instead.

Is Or the same as Xor?

No. Or is true if either or both conditions are true. Xor is true when the conditions differ, meaning exactly one is true when there are two Boolean conditions.

Try it: the Column Letter to Number: aA is 27, XFD is 16,384. Converts both ways.

More in VBA & macros

Sources: Function behaviour and menu paths: Microsoft Support documentation for Excel. Method & sources

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