Wage surveys do not break figures out by years of experience, so any precise claim about what an additional year is worth is an inference rather than a measurement. What can be said is the shape: proportional gains are largest in the first several years, flatten in the middle, and the total spread attributable to experience alone is much smaller than an occupation's full percentile range.
The honest starting point: it is not published
A recruiter tells you that five years is worth about fifteen percent, and it sounds specific enough to be a fact. Ask where the figure came from and the trail usually ends at a salary site, which got it from people who chose to fill in a form. The number may not be wrong, but nobody can tell you what it measures. That is a strange position to negotiate from, and it is the normal one.
The national wage survey carries no years-of-experience breakdown at all. It is an establishment survey, which means employers report what they pay for positions rather than the tenure of the people filling them. There is no official figure anywhere for what five years is worth, in any occupation. Any site presenting a clean experience curve is using private survey data with a smaller sample and a proprietary method, or inferring it from something else.
Both of those can be useful, and neither is the same as measured national data. The distinction matters most in the room where somebody is quoting a percentage at you. Knowing which kind of number you are looking at is the difference between a data point and a decoration. It also tells you which claims you can safely make yourself.
The proxy that does exist
The percentile spread is real, published, and available for every occupation and metro. In a typical occupation the tenth percentile sits at about 68 percent of the median, and the ninetieth runs roughly 2.22 times the tenth. That range is the total distance between the people at the bottom of an occupation and the people at the top. It is the closest thing to an experience curve that official data contains.
The catch is that experience is only one of several things separating those two points. Geography accounts for part of it, employer type for another part, and specialization for a third. So the spread is an upper bound on what experience is worth rather than a measurement of it. Reading it as a pure tenure curve is the single most common way the premium gets exaggerated.
What the data does say about experience
The employment projections carry a work-experience field describing what is needed to enter each occupation, and the distribution is striking. Of 832 occupations, 716 require no prior related experience at all. Another 88 require less than five years, and only 28 require five years or more. That is a very different picture from the one implied by job postings asking for seven years of something.
Those 28 occupations are almost entirely management. Chief executives sit at $213,990, computer and information systems managers at $175,140, architectural and engineering managers at $171,270, financial managers at $166,570. Nothing else on the list looks much like a technical specialty with a long apprenticeship. The pattern is consistent enough to be the finding rather than a curiosity.
What that pattern actually means
Experience is rarely a gate for entering an occupation. It is a gate for entering the management layer above one, and that is precisely where the large step changes in pay sit. The years are not being purchased for their own sake; they are the precondition for a different job. That is a more accurate model than a smooth curve rewarding each year served.
So the honest shape is a flattish stretch inside an occupation followed by a step when you cross out of it. The stretch pays for competence, scope and specialization rather than for time. The step pays because the destination is a separate occupation with its own wage table. Planning around the step is a different exercise from waiting for the stretch to deliver.
Why the curve is steepest early
The distance from the tenth percentile to the median is usually larger than the distance from the median to the seventy-fifth. Early years move you fastest because you start below the level the work commands, and catching up to the market rate is quicker than exceeding it. That is why the first several years feel like momentum to almost everybody. It is also why the momentum ends without anything going wrong.
After that point, movement depends on things that are not time. Scope, specialization and employer choice do the work that seniority did earlier. People who expect the early pace to continue are reliably disappointed somewhere around year seven. The disappointment is structural, and it arrives on schedule for people who are doing everything well.
Where experience is worth the most
In wide occupations the answer is a great deal. Personal financial advisors run 7.11 times from the tenth percentile to the ninetieth, and physicians and chief executives both run above six. In work like that the distance between an early-career and an established person is enormous and largely earned inside the job. Patience genuinely is a strategy there, and specialization compounds.
In narrow occupations it is worth very little. Farmworkers run 1.39 times and tellers 1.45, which is a modest premium for a decade of doing the work well. The tasks are standardized, so a tenth year does not produce something a third year could not. In those occupations the route upward is a different occupation, and knowing that early prevents years of misdirected effort.
Estimating it for yourself
Take the published spread for your occupation in your metro as the starting point. Subtract what you can reasonably attribute to geography by comparing the same occupation across metros. Subtract what you can attribute to employer type by comparing advertised ranges across industries in the same area. What remains is a plausible experience effect, arrived at deliberately rather than borrowed.
That estimate is still an estimate and it is worth labeling as one. Doing it explicitly beats accepting a clean curve without knowing what produced it, because you can defend every step of your own version. It also gives you a range instead of a point, which is more honest and harder to argue with. A range you can source outperforms a percentage you cannot.
The better source for an actual answer
Advertised ranges in states with pay transparency requirements are the closest thing to a measured experience premium available to you. Find a posting asking for one to two years and another asking for five to seven, in the same metro, for the same work. The difference between those two ranges is current, local and specific to your occupation. It is also free, and it took twenty minutes rather than a subscription.
Collect a handful of pairs rather than one, because any single posting can be unusual. Then take that comparison into the conversation instead of a percentage from a site nobody can audit. The published band for your occupation and area, plus where you sit inside it, is checkable in front of the person you are asking. Checkable is exactly what makes it stronger than a confident number with no source behind it.
Common questions
How much is a year of experience worth?
Published wage data does not contain the answer. Any precise percentage is an inference, usually from self-reported data with a particular audience, rather than a measurement of the population.
Why can I not just use the percentile range?
Because that range is produced by industry, employer size, location and specialization as well as experience. Attributing all of it to tenure is the most common way the premium gets exaggerated.
What can be said with confidence?
The shape: proportional gains are largest early, flatten in the middle, and the flattening reflects both diminishing returns and how internal raises are calculated. Shape, not magnitude.
What should I argue from instead?
The published band for your occupation and area, and where in it you sit. It is checkable, which is exactly what makes it stronger in a negotiation.
Are the salary-site experience curves useless?
Not useless, but they describe whoever answered that site's survey. Treat them as directional for the shape and not as a measurement of what your employer should pay.
Is there official data on what experience is worth?
No. The national wage survey is an establishment survey with no tenure breakdown, so there is no published years-of-experience curve.
How many occupations require experience to enter?
Of 832, only 28 require five years or more — almost all management — while 716 require none at all.
What is the best available substitute?
Advertised ranges in pay transparency states. Compare a posting asking for one to two years against one asking for five to seven, same metro, same work.