Internal promotions are calculated as an increase on your current salary, while external hires are priced against the current market for the role. Because your salary reflects the market of the year you were hired plus percentage raises, it drifts below market over time — so the same promotion frequently pays less than the same job would if you were hired into it. The question to ask is where the promotion places you in the band, not what the percentage increase is.
The mechanism that decides it
Two different pricing methods sit behind the two routes, and almost everything else follows from them. When you are promoted, somebody calculates an increase on what you currently earn — ten percent, fifteen, whatever the policy allows. When somebody is hired externally into the same role, the employer prices it against what the market currently costs for that job.
Those two methods produce different numbers because your current salary is a historical artifact. It was set against the market of the year you were hired, and it has moved by percentage increases since, which preserve your position rather than resetting it to the market. Nothing in an ordinary pay cycle performs that reset for you.
So the gap between an internal promotion and an external hire into the same seat is not a judgment about the two people. It is the accumulated distance between your salary history and today’s market, expressed as a number in a letter. Neither person’s ability enters that calculation at any point.
Why your salary drifts below the market
The drift is mechanical rather than deliberate. Bands move with the external market because employers have to hire against it. Individual salaries move by merit percentages, which are frequently smaller than the band movement in any period where the market is tightening.
Compound that over five or six years and the distance becomes substantial. Somebody who has stayed in one role through a period of rising wages can be well below the band for their own job, without anybody having made a decision about them at any point. The drift is a property of the mechanism rather than of anybody’s judgment.
This is the same mechanism that produces salary compression, where new hires arrive at or above the pay of people already doing the job. Employers know it happens and frequently do nothing, because correcting it means raising a group at once while hiring one person at market is a small marginal cost by comparison. The incentives point one way and most employers follow them.
What the internal route actually offers
It is worth being fair to the internal route, because the arithmetic above makes it sound worse than it is in practice for most people. Several genuine advantages sit outside the salary figure entirely.
The information asymmetry runs in your favor. You know what the job is, who you would work for, whether the team functions and whether the previous person left frustrated. An external candidate is guessing at all of it and finds out after they have resigned from somewhere else.
The risk is lower in a way that is hard to price. No probation-period uncertainty, no relocation, no six months of learning where anything is, and no chance of discovering in week three that the role was misdescribed. That has real value even though it never appears in an offer.
And internal moves compound differently. A promotion into a level with room above it can be followed by another one, whereas an external move usually needs a couple of years before the next one is credible to anybody. Internal ladders can be climbed faster than external ones.
The costs of the external route that people underweight
The external premium is real and it is not free. There is a period at the start where you are producing less while learning an organization, and in some roles that is six months of reduced effectiveness that affects your first review at the new employer. Nobody adjusts for a learning curve when ratings are set.
There is also the risk of the role being different from the description, which is genuinely common and only discoverable from the inside. And there is the loss of accumulated context — the relationships, the institutional knowledge and the credibility that let you get things done quickly, none of which transfers with you. Rebuilding all of it takes longer than most people expect.
Vesting and accrual losses belong here too. Leaving before a vesting date, forfeiting a leave balance, or resetting a retirement matching schedule are all real subtractions from the headline gain. Price them before treating the external number as the better one.
Using an offer without leaving
An external offer is the strongest evidence available in any internal pay conversation, and it is also the most dangerous tool in this article. Employers frequently match, and a substantial share of people who accept a counteroffer leave within a year anyway. The money was rarely the whole problem in the first place.
The reason is not mysterious. The counteroffer fixes the salary and does not fix whatever made you look, and it changes how you are seen — as somebody who has one foot out, which affects assignments and succession planning in ways nobody announces to you. That cost arrives quietly and lasts longer than the raise does.
If you are going to use an offer, only get one you would actually accept. Presenting an offer as leverage when you have no intention of taking it works exactly once and fails badly the moment somebody calls it. Bluffing here is not worth the downside at all.
Where internal genuinely wins
Internal wins where the employer has structured pay properly and applies it. Organizations with published bands and a rule that promotion moves you to a defined point in the new band produce internal outcomes close to market, because the mechanism resets rather than increments. That single policy choice removes most of the gap described above.
It wins where the alternative is a market you cannot easily access — a thin local labor market, a specialization with few employers, or a visa arrangement tied to a particular employer. Constraints on your alternatives change this calculation entirely.
And it wins where the promotion is a step onto a ladder rather than a single move. A level with three more above it inside a growing organization is worth more over five years than a larger immediate increase into a role with nothing above it. Ladders compound in a way that single steps never do.
The pattern that works over a decade
The pattern that produces the best outcomes is neither pure loyalty nor constant movement. It is staying while the internal moves are genuinely available, and moving when they stop appearing. The judgment is about availability rather than about loyalty.
Staying too long is the more common error and it is the expensive one, because the drift compounds silently. Moving too often has its own costs — shallow relationships, a resume that raises questions, and repeated learning curves — but it is much the rarer mistake in practice. Most people err by staying rather than by leaving.
The signal to move is not dissatisfaction. It is the two checks below coming back the wrong way. Feelings make a poor trigger and figures make a good one.
The numbers to check before deciding
Ask where the promotion places you in the band for the new level, rather than asking what the percentage increase is. Those are different questions and only the first tells you anything useful — a fifteen percent increase that lands you at the bottom of the new band is a worse outcome than a ten percent increase that lands you at the midpoint.
Then check the market. Find posted ranges for the new title in your metro, weighting jurisdictions where ranges are legally required, and compare them against the number you have been offered internally.
If the internal number sits inside the market range, the non-financial advantages of staying probably decide it. If it sits below the bottom of that range, you are being asked to accept a discount for continuity, and it is entirely reasonable to say so before accepting — with the band figures in hand rather than as a general complaint.
Common questions
Why do external hires often earn more?
Because the two routes use different pricing. A promotion is an increase on your current salary; an external hire is priced against today's market for the role.
Why does my salary drift below market?
Bands move with the external market because employers must hire against it, while individual salaries move by merit percentages that are frequently smaller. Compounded over years the gap becomes substantial.
What does the internal route offer?
Information — you know the job, the manager and the team. Lower risk, no relocation or learning curve, and the chance of a further move sooner than an external hire could make one.
What do people underweight about moving?
A period of reduced effectiveness while learning the organization, the risk the role differs from its description, lost institutional context, and any vesting or accrual forfeited.
Should I use an external offer as leverage?
Only get one you would accept. Employers frequently match, many people leave within a year anyway, and being seen as having one foot out affects assignments quietly.
When does staying genuinely win?
Where bands are published and promotion moves you to a defined point in the new band, where the external market is thin or hard to access, and where the promotion is a step onto a ladder.
What is the right long-run pattern?
Stay while internal moves are genuinely available and move when they stop. Staying too long is the more common and more expensive error, because the drift compounds silently.
What should I ask about a promotion?
Where it places you in the band for the new level rather than what the percentage is. Fifteen percent landing at the band's bottom is worse than ten percent landing at the midpoint.