The 2027 ACA affordability 2027 percentage is 10.22%, and if you are an applicable large employer in Louisiana, that single number sets the ceiling on what you can ask employees to pay for self only coverage next year. It is up from 9.96% for 2026, and it is the first time the threshold has crossed into double digits since the rule existed. Mechanically, that gives you more room. Practically, it puts you in front of a decision you should make on purpose rather than by default.
The reason this matters in September rather than December is that contribution strategy has to be settled before open enrollment materials go out, and the safe harbor math has to be run against real 2027 payroll figures rather than last year’s. Employers who wait until November end up defaulting to whatever the broker’s renewal spreadsheet says, which is a fine outcome by accident and an expensive one when it is wrong. If you are still moving benefits data between systems by hand, our post on benefits management technology and what to automate first is worth reading before you start, because the calculation is only as reliable as the payroll data underneath it. Figures in this post are current as of the publication date, and employers should confirm the current year percentage before relying on it, since this number is announced and can change annually.
The 2027 Number and How It Compares
For plan years beginning in 2027, the affordability percentage is set at 10.22%, up from 9.96% for 2026. That increase is the first time the affordability threshold has crossed into double digits since the rule was created, and it changes the ceiling on what applicable large employers can ask employees to pay for self only coverage without triggering a penalty risk.
Coverage counts as affordable when an employee’s required contribution for the lowest cost, minimum value, self only plan option does not exceed 10.22% of that employee’s household income. Because household income is not something an employer can actually see, the rule is applied through one of three safe harbors rather than through direct verification, which is the mechanic the rest of this post walks through.
Who the Affordability Rule Actually Applies To
The affordability requirement applies to applicable large employers, meaning employers that averaged 50 or more full time equivalent employees across the prior calendar year. Full time equivalents combine part time hours into whole employee units, so a business with 35 full time staff and a meaningful number of part time or seasonal workers can cross the 50 threshold without anyone deciding to grow into it.
This is also the point where Louisiana employers most often mix up two separate rules. The federal 50 full time equivalent threshold determines applicable large employer status for ACA purposes. It is not the same as any Louisiana state level obligation tied to a 20 employee count, which governs a different set of requirements entirely and is covered in our Louisiana payroll and HR compliance guide. Treating those as the same number is the single most common error in local content on this topic, and it is worth double checking your own headcount math against the federal definition specifically before you assume you are or are not in scope.
The Three Safe Harbors, and When Each One Wins
The IRS allows three safe harbors because household income is invisible to the employer: the Form W-2 safe harbor, the rate of pay safe harbor, and the federal poverty level safe harbor. The Form W-2 safe harbor measures affordability against the employee’s actual W-2 wages for the year, which is precise but only knowable after the year is over, making it awkward for setting a contribution rate in advance.
The rate of pay safe harbor uses the employee’s rate of pay at the start of the plan year, projected forward, which makes it the most practical choice for hourly workforces where wages are known going into open enrollment. The federal poverty level safe harbor uses a fixed government figure and is the simplest to apply uniformly, though it tends to produce the lowest allowable contribution ceiling of the three, which makes it the most conservative and sometimes the most expensive option for the employer. You may apply a safe harbor uniformly to any reasonable category of employees, such as hourly staff or a specific location, but whichever safe harbor you choose has to be applied consistently within that category for the entire plan year.
Rate of Pay Safe Harbor Math, With a Worked Example
The rate of pay safe harbor is the one most Louisiana employers with hourly workforces will actually use, so it is worth working through the math once. Take the employee’s hourly rate as the first day of the plan year, multiply by 130 hours to arrive at a monthly wage figure, then multiply that result by 10.22%. The result is the highest monthly employee contribution for self only coverage that still counts as affordable under this safe harbor.
As an example, an employee earning 16 dollars an hour has a monthly wage figure of 2,080 dollars, and 10.22% of that figure is roughly $212.57. That means the employer can charge up to about $212.57 a month for that employee’s self only coverage and still meet the affordability standard under the rate of pay safe harbor. For salaried employees, the calculation uses monthly salary directly in place of the hourly projection, with the same 10.22% applied against it.
The W-2 Safe Harbor and Its One Big Catch
The Form W-2 safe harbor has a real advantage in accuracy, since it is based on actual reported wages rather than a projection, but it comes with a timing catch that makes it a poor fit for setting contributions before the fact. Because W-2 wages are not final until the year closes, an employer using this safe harbor is effectively confirming affordability after the plan year has already run, not before open enrollment materials go out.
That works fine as a compliance check performed after the fact, and some employers use it exactly that way as a backstop to whichever safe harbor they set contributions against initially. It works poorly as the primary tool for deciding what to charge employees in September, which is why most employers planning their 2027 contribution strategy right now are working from the rate of pay or federal poverty level safe harbors instead.
See where your contribution strategy stands before the ceiling catches you off guard.
What Happens If Your Plan Is Not Affordable
If a plan is not affordable under whichever safe harbor an employer relies on, the exposure runs through the employer shared responsibility provisions, and it attaches per employee who receives subsidized marketplace coverage as a result, not as a single flat penalty across the whole workforce.
That per employee structure means the practical risk scales with how many employees are affected, which is exactly why running the safe harbor math against real, current payroll figures before open enrollment matters more than treating it as a formality. An employer who sets contributions without checking the math is not necessarily going to be wrong, but they are making a guess on a number that is straightforward to calculate correctly in advance.
Why a Higher Threshold Is Not Automatically Good News
A higher affordability percentage widens the legal ceiling on what employees can be charged, but a wider ceiling is not an instruction to charge more. Pushing contributions toward the new 10.22% limit increases the share of income employees are spending on coverage, and that tends to show up later as higher plan waivers and higher turnover among the employees least able to absorb the increase.
Most employers who handle this well use the additional room selectively, for specific plan tiers or specific employee categories, rather than moving every contribution up to the new ceiling across the board. The number is a constraint you are allowed to operate inside of. It is not a target you are expected to hit.
A September and October Planning Timeline for Louisiana Employers
The reason this matters in September rather than December is sequencing. Contribution strategy has to be settled before open enrollment communications go out, and the safe harbor math has to be run against real 2027 payroll figures rather than last year’s numbers.
A workable timeline for Louisiana employers starts in early September by confirming applicable large employer status and pulling current payroll data, moves through mid September by running the safe harbor math against at least two safe harbor options for comparison, and lands on a final contribution decision by early October so enrollment materials can be built around a number that is already settled. Employers who wait until November tend to default to whatever figure is on the broker’s renewal spreadsheet, which is a fine outcome when it happens to be right and an expensive one when it is not.
Getting Your Payroll and Benefits Data to Agree Before You Calculate
None of the safe harbor math above is reliable if the wage figures feeding it are stale or if payroll and benefits data live in two systems that do not talk to each other. If you are still moving benefits data between systems by hand, that reconciliation gap is worth closing before you run the 2027 numbers, not after, since a rate of pay calculation built on an outdated wage figure produces a wrong answer with total confidence. Our post on benefits management technology and what to automate first covers where employers typically start when they decide to fix that gap for good, and our human resources services team can help align the payroll side of that process.
Frequently Asked Questions
What is the ACA affordability percentage for 2027?
It is 10.22% for plan years beginning in 2027, up from 9.96% for 2026. Coverage is treated as affordable when an employee’s required contribution for the employer’s lowest cost, minimum value, self only option does not exceed 10.22% of household income. This is the first year the threshold has exceeded 10%.
What are the three ACA affordability safe harbors?
The Form W-2 safe harbor, the rate of pay safe harbor, and the federal poverty level safe harbor. Employers use them because household income is not visible to them. You may apply a safe harbor uniformly to any reasonable category of employees, but you have to apply it consistently within that category for the whole plan year.
How does the rate of pay safe harbor work?
Take the employee’s hourly rate as of the first day of the plan year, multiply by 130 hours to get a monthly wage figure, then multiply by 10.22%. The result is the highest monthly employee contribution for self only coverage that still counts as affordable. For salaried employees you use monthly salary instead of the hourly calculation.
Am I an applicable large employer?
You are an applicable large employer if you averaged 50 or more full time equivalent employees across the prior calendar year. Full time equivalents include part time hours aggregated into whole employee units, which is why seasonal and part time heavy businesses in Louisiana sometimes cross the threshold without expecting to.
Does a higher affordability percentage mean I should charge employees more?
It means you may, not that you should. A higher threshold widens the legal ceiling on employee contributions, but pushing to the ceiling raises the share of income employees spend on coverage and tends to increase waivers and turnover. Most employers use the extra room selectively rather than across the board.
The Number Is Set. The Strategy Is Still Yours.
10.22% is a ceiling, not a target. The employers who handle renewal season well treat the affordability calculation as a constraint they verify and then make a deliberate choice inside, rather than a number they discover in November when the enrollment packets are already printed. Run the safe harbor math on real 2027 payroll figures in September, decide where you want to sit relative to the ceiling, and build the enrollment communication around that decision. That sequence takes an afternoon and it is the difference between a renewal you chose and a renewal that happened to you.
If your benefits data lives in one system, your payroll data in another, and the reconciliation lives in someone’s head, this is the year to fix that. Coeur has spent 24 years helping Louisiana employers run benefits administration and payroll on one platform, which means the wages your affordability calculation depends on are the same wages you actually paid. If you have recently crossed a size threshold and are not sure what changed, start with our post on local payroll services for companies with 20 or more employees. Then get a quote and we will look at your 2027 numbers with you before open enrollment.
