What are Geographic Differentials?
Geographic differentials are market-driven pay variations between locations.
Companies use these differences when pricing the same job in different geographic markets. The objective is to control costs where it is not necessary to pay at national levels, or to ensure adequate pay in areas where the market is much higher than the national average.
Now you might think that living in San Francisco, one of the more expensive cities in the U.S., would naturally have higher salaries because of the cost of living alone.
In spite of what many think, it is not an adjustment based on cost of living.
Geographic differentials are usually expressed as a
percentage that’s applied to a national market rate.
For example, a job with a median national salary of $60,000 might pay twenty percent (120%) more, or $72,000, in San Francisco, but ten percent less, or $54,000, in Jackson, Mississippi.
How are Geographic Differentials calculated?
Geographic differentials are expressed as a percent of the base-line data point.
If research shows that a geographic location pays, on average, 90% of the national average, or in other words 10 percent less than the national average:
- Plus/Minus Geo Diff: -10%\
Note: You will find compensation professionals use the same term for both calculations, depending on their original training.
Ensure that your group is consistent in using this term. For purposes of example, we are going to use the Geographic Differential ratio.
Calculation of Market Rates
Some companies adjust their market data for geographic differences before reporting it to management or using it to develop their compensation program.
(Of course, this would not be appropriate for market data that is already adjusted for geographic differences, such as “by region” cuts of the data).
Salary structure differences
This is one of the most commonly used methods to address geographic differentials.
- Compensation professionals create a “core” range, based on their headquarters location or a national average, and then create structures for each geographic region starting with the core range points.
- This recognizes differences in average pay levels for each location, allowing you to manage different control points, or slot jobs up or down through salary grades on the basis of local market data.
- Usually, the different geographic locations are grouped into salary areas or plans and ranges created for each grouping.
Individual pay adjustments and differentials
Companies typically increase the pay for individuals when they move to a location that demands higher rates of pay. It is rare to go the other direction adjusting pay downward when someone goes to a lower pay location.
Mary H. is transferred from her job in Buffalo, New York to the same job in New York City.
The company has only one salary range for this job, which is closer to Buffalo pay rates than those in New York City. In order to make up for the difference in pay levels between the two locations, Mary is given a 10% raise to go to New York City.
(Typically, Mary is not asked to take a salary reduction if she returns to Buffalo, unless it’s made clear in the original move).
Temporary pay adjustments or re-assignment bonuses
These are typically used when an employee is on assignment in a higher wage area. If the change is made to the employee’s salary, the wage adjustment will continue until the employee is re-assigned, returns to the prior job or transfers to another location.
Mary H. from the above example receives a 10% increase in pay while she is on assignment in New York City. When she returns to Buffalo, her pay is reduced.
Supplemental payments are often used when an employee is on temporary assignment in a higher paying geographic area.
Supplemental payments differ from temporary pay adjustments in that supplemental payments are usually used in very short assignments (A few days to a few weeks) and provided in one or two payments rather than a temporary salary increase.
What should you consider when choosing a geographic differential methodology?
- Are you recruiting nationally or locally for each job or job grouping? National averages may still work for you in the former case.
- If you’re creating your own geographic differentials, are there industry differences that may account for some of the differences you’re seeing in your data? The industry difference may have originated from a survey whose participants are from one or two key industries only.
- Do they apply to non-exempt, lower paid jobs?
- Or are there actual differences for higher paid positions from different cities?
How are differentials used? For creating ranges? Or applying to market data?
They’re used both ways, based on a variety of different circumstances. Much depends on your company’s compensation philosophy, history, politics or, sometimes, whim.
Where can you obtain Geographic Differential market data?
There are two ways to obtain the differential from external resources. You can calculate the differentials based on the survey data you have for various geographic regions…or you can use formulas provided by one of the big consulting firms such as ERI, Towers Watson or Mercer.
It’s better not to rely on government created tables (Bureau of Labor Statistics, etc) because they have other factors built in that can exaggerate the differences, and the data is often too old by the time it’s published.
Making Geographically Differentiated Pay Equal – Begin with a Sound Methodology
The basic principle you need to work from is that employees expect equal pay for equal work. Geographically differentiated pay can still be equal, but you need a sound methodology to back it up. Meantime, subjective arguments can be thrown at you from managers with their own agendas.
Compensation professionals have heard managers argue it both ways:
“I must pay more in rural locations to attract the good people from the metro areas”
“I must pay more in large metro areas because the competition is stiffer for talent”
This latter argument usually wins the day in a contest of wills. However, the better handle you have on your geographic differential statistics, the more you can keep your organization’s policies on track with the real world, based on real numbers.
Watch Your Words with Geographic Differentials
Be careful when naming the different geographic groupings — use non-offensive language. Remember that status and ego are easily affected by categorizations in the compensation world, and you don’t want to go around slapping on labels that make some people feel their jobs are somehow less valuable than those at other locations.
This actually applies to all labels you use in the compensation arena – and business in general today. In a socially driven world, communication about compensation is of critical importance.