How UN Salaries Are Set: Inside the Common System

There is no single "UN employer", and there is no single UN salary. Instead, the United Nations and dozens of related organizations pay their staff from one shared rulebook — the common system — that sets how base salaries, cost-of-living adjustments, allowances and benefits are built. Once you understand its logic, a UN offer stops looking like an arbitrary number and starts reading like a structure you can predict, compare and plan around.

This guide is the map. It explains who sets UN pay, the two very different principles behind it, how a salary is assembled layer by layer, and where pension, insurance and "tax" fit in — then points you to the detailed guides and live figures for each piece. It is an overview, not a statement of entitlement: the exact scales and rates change on their own cycles, so always confirm current numbers with the sources linked at the end and with your own organization's HR.

One system, many employers

The common system is a shared framework of salaries, allowances and benefits applied by the UN Secretariat and dozens of agencies, funds and programmes — among them UNDP, UNICEF, WHO, FAO, UNHCR and WFP. Because they all draw on the same scales, a P-3 economist earns broadly the same core salary at UNICEF in New York as at FAO in Rome. That standardization is deliberate: it stops organizations bidding against each other for talent, and it lets staff move between them without renegotiating their pay from scratch.

Not every international organization belongs to it. The World Bank, the IMF, the regional development banks and the EU institutions run their own, separate pay systems. When people say "UN pay", they almost always mean the common system described here.

Who sets the rules: the ICSC

The body that designs and maintains the framework is the International Civil Service Commission (ICSC), an independent expert commission established by the UN General Assembly in 1974. The ICSC studies labour markets and living costs, then recommends the salary scales and allowance rates. The General Assembly approves the core elements, and each organization applies them through its own staff rules and administrative issuances. In practice that means the big numbers are set centrally and consistently, while the fine detail of how a rule is administered can vary slightly between organizations.

Two principles, two kinds of pay

The single most important thing to understand is that UN staff are paid under two completely different logics, depending on how they are recruited.

Internationally recruited staff — the Noblemaire principle

The Professional and higher categories (P-1 to P-5, the Director levels D-1 and D-2, and the ungraded senior levels above them) are recruited internationally, from any member state. To attract qualified people from everywhere, their pay is governed by the Noblemaire principle: it is pegged to the highest-paid national civil service in the world — currently that of the United States. The result is one worldwide salary scale, expressed in US dollars, the same for a given grade and step wherever you are posted, with a separate cost-of-living adjustment layered on top. Field Service (FS) staff, recruited internationally for field missions, sit alongside this track.

Locally recruited staff — the Flemming principle

The General Service (GS) and related categories — along with National Professional Officers (NPOs), who do professional work tied to the local context — are recruited locally at each duty station. Their pay follows the Flemming principle: it is set to match the best prevailing conditions in the local labour market, measured through periodic salary surveys. That produces a separate scale for each duty station, in local currency, with no post adjustment — because the survey already reflects local living costs. If you are weighing which track fits you, see Professional vs. General Service, and to place a grade quickly, how to decode the UN grading system.

How a Professional salary is built, layer by layer

For internationally recruited staff, pay is assembled in layers — and the layers matter far more than any single headline figure:

Net base salary — the worldwide floor for your grade and step, in US dollars. This is the same number for that grade and step everywhere on earth.
Post adjustment — a cost-of-living multiplier for your specific duty station, recalculated regularly to track living costs and exchange rates. It is what keeps purchasing power broadly similar between an expensive city and a cheaper one. Crucially, a higher post adjustment does not make you better off — it exists to offset the higher cost of living where you are. See UN post adjustment explained for exactly how the index and multiplier work.
Allowances — dependency, education grant, mobility, hardship, danger pay and more, depending on your family situation and where you are posted.

The sum of the first two layers has a name: net remuneration = net base salary + post adjustment — and it matters because several benefits, such as the dependency allowance for a spouse, are calculated as a percentage of it rather than of base salary alone. This guide deliberately stops at the shape of the calculation. To run it with real figures — the base-times-multiplier arithmetic, the deductions, and a take-home estimate for a given grade and duty station — see our companion guide, How Your UN Salary Is Really Calculated, then model your own package with the take-home calculator.

How General Service pay works

For locally recruited staff, there are no layers to assemble. Because the local salary survey already builds cost of living into the scale, a General Service or National Officer salary is simply the figure for your grade and step on your duty station's own scale, in local currency — no post adjustment on top. Many of the same family and situational allowances still apply, and pension and health-insurance arrangements work the same way as for international staff.

Gross, net and "staff assessment"

UN salary scales show two columns: a gross figure and a net figure. The gap between them is staff assessment — an internal levy that stands in for national income tax, deducted at progressive rates so that higher earnings are assessed more heavily. UN salaries are quoted and paid net, after this deduction.

Two consequences are worth internalizing. First, because most member states exempt UN salaries from national income tax, a UN net figure is, for most staff, genuinely take-home — so when you compare it to a private-sector offer, remember that the private figure is usually gross, before tax. Second, there is a notable exception: a few countries, most prominently the United States, do tax their nationals on UN earnings. Those staff are reimbursed for that national tax through a tax-equalization arrangement funded from staff assessment, so their net position is kept broadly in line with everyone else's.

What comes out: pension and health insurance

Two significant deductions sit between your net remuneration and the money that reaches your account.

Pension. Most staff participate in the UN Joint Staff Pension Fund (UNJSPF). Contributions are shared: you pay roughly one-third and your organization pays the other two-thirds of a fixed percentage of your pensionable remuneration (the staff share has for years been about 7.9%, but the rate is set by the General Assembly and can change). It is a defined-benefit fund, so your eventual pension is based on your contributory service and pensionable remuneration, not on investment returns. The full mechanics are in the UN Joint Staff Pension Fund guide.
Health insurance. Coverage is contributory — you and your organization share the premium — and the specific plan depends on your organization and duty station. Coverage for family members follows its own rules (health coverage for your dependants), and staff who complete enough qualifying service can carry subsidized coverage into retirement through After-Service Health Insurance (ASHI).

Allowances and entitlements at a glance

Beyond salary, the common system pays a range of allowances tied to your family and your posting. You will not receive all of them; which apply depends on your grade, contract, dependants and duty station. The main ones, each with a fuller guide:

Dependency allowances — for a recognized spouse/partner and children, added on top of salary.
Education grant — reimburses part of school fees for children of internationally recruited staff serving away from their home country.
Post adjustment — the cost-of-living layer described above (detailed guide).
Hardship allowance — extra pay for difficult duty stations, graded by an A-to-E classification.
Danger pay — a flat, reviewable amount for locations with heightened risk (how it is calculated).
Mobility incentive — rewards staff who move between duty stations over a career.
Rental subsidy — helps offset high housing costs at certain duty stations (how it works).
Rest and Recuperation (R&R) — paid breaks from the toughest postings (the framework).
Daily Subsistence Allowance (DSA) — covers accommodation and meals during official travel (when and how it applies).

For the field-focused allowances in one place, see UN field allowances explained and hardship, danger pay and mobility.

What makes your pay change over time

Step increments. Within a grade you move up a step for satisfactory service — usually once a year at the lower steps, then every two years higher up — which raises your base salary without a promotion.
Promotion. Moving to a higher grade lifts your base salary onto a higher band. How that actually happens is covered in how UN promotions really work.
Changing duty station. Because post adjustment and several allowances are location-specific, a move can change your take-home even if your grade and step do not — up or down — while purchasing power is meant to stay broadly comparable.
Family status. Gaining or losing a recognized dependant changes the dependency-related elements of your pay.

Common misconceptions

"A higher post adjustment means I earn more." No — it offsets a higher cost of living. Two staff on the same grade and step in different cities can take home different amounts and still have similar purchasing power.
"UN pay is tax-free, so it's all profit." Salaries are paid net of staff assessment, so the "tax" is already taken out; the net figure is not a pre-tax windfall. And US nationals do pay national tax (then get reimbursed).
"The base salary is what I'll take home." Base salary is only the first layer. Post adjustment is added; pension and insurance are deducted; allowances may apply. The net base scale is a starting point, not the answer.
"Everyone at my grade earns the same." True for net base salary worldwide — but total take-home varies by duty station, step, dependants and posting.

A short history

The idea of an independent international civil service — paid by member states but loyal to none — dates to the League of Nations after 1919. The Noblemaire principle emerged in the 1920s to set international pay against the best-paid national service; the Flemming principle followed in 1949 for locally recruited staff; and the ICSC was created in 1974 to run the whole framework. The most recent major overhaul was the unified salary scale introduced from 1 January 2017, which replaced the old two-track scale (separate "dependency" and "single" rates) with a single net scale for everyone and moved family recognition into separate allowances. Most of today's structure dates from that reform.

Glossary

Common system — the shared salary, allowance and benefit framework used by the UN Secretariat and dozens of other organizations.
ICSC — International Civil Service Commission; sets and maintains the scales and allowance rates.
Noblemaire principle — the basis for Professional pay: peg it to the highest-paid national civil service.
Flemming principle — the basis for General Service pay: match the best prevailing local conditions.
Net base salary — the worldwide floor for a grade and step, before post adjustment.
Post adjustment — the duty-station cost-of-living multiplier added to net base salary.
Net remuneration — net base salary + post adjustment; the base for several percentage allowances.
Staff assessment — the internal levy that converts a gross salary to the net figure you are paid.
Pensionable remuneration — the notional salary figure used to calculate pension contributions and benefits.

Frequently asked questions

Is UN salary really tax-free?

For most staff, yes in effect: salaries are paid net of an internal staff assessment and are exempt from national income tax in most member states. The important exceptions are countries — notably the United States — that tax their own nationals on UN income; those staff are reimbursed through a tax-equalization arrangement so their net pay stays comparable.

Why do two people on the same grade take home different amounts?

Because net base salary is only the starting layer. Post adjustment varies by duty station, steps differ, and allowances depend on dependants and posting. Same grade, different circumstances, different take-home.

Does a bigger post adjustment mean a better deal?

Not on its own. Post adjustment tracks the cost of living where you are posted; a high multiplier usually signals an expensive city, not a more generous package. Compare purchasing power, not headline numbers.

Where can I see the actual numbers?

Salary scales and allowance rates are published and updated on their own cycles. Explore them on our UN salary scales and benefits & allowances pages, model a package with the take-home calculator, and confirm the current official figures on the ICSC website.

Explore the numbers

The Salary & Benefits hub — the scales, allowances catalogue and calculator in one place, built for comparing duty stations.
UN salary scales — the Professional and General Service tracks, side by side.
Benefits & allowances — what each entitlement is and who qualifies.
Take-home calculator — build a package from net base to what actually reaches your account.

This is a plain-language overview, not a statement of entitlement. Salary scales, post adjustment multipliers, allowance rates and contribution percentages are set by the ICSC and the General Assembly and change on their own cycles. Always confirm current figures on icsc.un.org and with your own organization's human resources office.