Excel’s SUMIF and SUMIFS functions both let you add up values that match criteria you specify. The problem is that many people treat them as separate tools: SUMIF for one condition, SUMIFS for multiple conditions.

I did the same for years until I realized SUMIFS works just as well with a single condition. Making the switch from SUMIF gave me formulas that are easier to expand, read, and maintain.

SUMIFS works just as well with one criterion

Remember one syntax instead of two

Many Excel users think of SUMIF and SUMIFS as separate tools: SUMIF for simple calculations and SUMIFS for anything more complex. But that distinction isn’t necessary. SUMIFS can handle a single criterion just as easily as SUMIF, which means you don’t need to switch functions depending on how many conditions your calculation has.

The biggest practical difference when switching between the two functions is their argument order:

=SUMIF(range, criteria, [sum_range])

SUMIFS(sum_range, criteria_range1, criteria1, [criteria_range2, criteria2], ...)

SUMIF asks for the range being evaluated first, then the criteria, and finally the values to add. SUMIFS does the opposite, putting the sum range first and adding each range-criteria pair afterward. That small difference is what makes SUMIFS such a useful default. Once you learn the syntax, you only need to remember one formula structure instead of switching between two depending on the complexity of your calculation.

Using the T_SalesData table from above, after typing a region into cell F1, I would use this in cell F2:

=SUMIFS(T_SalesData[Sales], T_SalesData[Region], F1)

Once SUMIFS becomes your default, you no longer have to decide which function fits each calculation. You just use the same structure every time.

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SUMIFS grows with your spreadsheets

Add conditions without starting over

I found that my spreadsheets rarely stayed static. I’d start with one condition, then a few weeks later, I’d need to add another. That’s when switching back to SUMIF became a nuisance. If you build a calculation using SUMIF and your manager later asks to filter the results by an additional parameter, you end up rewriting the formula and rearranging the arguments.

This is where SUMIFS really pays off. Need another condition? Just add a comma to the end of the formula and append the new range-criteria pair.

If your initial single-criterion setup looks like this:

=SUMIFS(T_SalesData[Sales], T_SalesData[Region], F1)

You simply add the extra argument inside the parentheses:

=SUMIFS(T_SalesData[Sales], T_SalesData[Region], F1, T_SalesData[Quarter], F2)

The core of the formula stays exactly the same. You never have to switch tools or rearrange your existing arguments to accommodate new layers of information.

SUMIFS puts the important part first

See what’s being totaled immediately

Adding criteria to the end of a SUMIFS formula doesn’t just make it easier to expand—it also makes it easier to read. Placing the numbers you’re adding up at the very front of your formula makes it easier to audit formulas, troubleshoot errors, or hand files off to coworkers.

Compare these two formulas side by side:

=SUMIF(T_SalesData[Region], F1, T_SalesData[Sales])

versus

=SUMIFS(T_SalesData[Sales], T_SalesData[Region], F1)

With SUMIF, the range being added is buried at the end of the formula, after the criteria range and condition. When you open a workbook later, you have to scan through the arguments before you know what value is actually being calculated. SUMIFS fixes this by putting the sum range first. In the example above, T_SalesData[Sales] immediately tells you what the formula is totaling before you even look at the filters.

That small change makes formulas much easier to scan when you’re troubleshooting, reviewing someone else’s work, or revisiting a workbook months after creating it.

When SUMIF still makes sense

Your old friend still has its place

While I’d recommend SUMIFS almost every time, a few specific scenarios might require you to stick with SUMIF:

• You’re maintaining an existing workbook: If a large workbook already uses SUMIF throughout, keeping the same formula style can make it easier for other people to understand and maintain. You also can’t use a simple Find and Replace to swap SUMIF for SUMIFS, because the two functions use different argument orders. Converting an existing workbook means reviewing and rebuilding each formula carefully.
• You’re sharing workbooks with people using older Excel versions: SUMIFS was introduced in Excel 2007, so workbooks that need to run in Excel 2003 or earlier will need to use SUMIF instead.
• You’re working with another tool that doesn’t support SUMIFS: Some older spreadsheet apps or systems that import Excel files may not recognize newer functions, making SUMIF the safer option.

Older Excel sheets also relied on SUMPRODUCT for multi-condition sums before SUMIFS existed. While SUMPRODUCT still has its place for more advanced array calculations, SUMIFS is generally the simpler, more readable, and easier-to-maintain choice for conditional sums.

Microsoft has never deprecated SUMIF, so it’s unlikely to disappear anytime soon. The point isn’t that it’s broken—it’s that SUMIFS has become the more practical default for new workbooks.

Out with the old, in with the new (most of the time)

Despite the plural “S” in its name, SUMIFS isn’t just for multiple conditions—it’s the formula I’d recommend using from the start. You’ll write formulas that are easier to expand, easier to read, and far less likely to need rewriting as your spreadsheets grow. But replacing SUMIF doesn’t mean every older Excel function deserves to be retired—some legacy Excel functions are still worth keeping. The key is knowing when a newer function genuinely improves your workflow and when the older option still has a place.