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How to answer "My pay went up — so why is my take-home the same?"
When pay rises but take-home pay feels like it has fallen, the cause is almost always a change in social insurance rates or statutory deduction standards. Employees tend to bring this question to their team lead at the start of the year or whenever their pay changes. The problem is that team leads often cannot explain accurately that this change is not a company decision but a statutory rate and standard the government announces every year. An answer like "I'm not really sure either, maybe taxes went up" only deepens the employee's anxiety. Social insurance contributions are not taxes but social insurance premiums, and confusing the two invites even more confusing follow-up questions later.
This guide is written for the following readers. Team leads who have struggled to answer clearly when asked about pay, managers who want to brief their team on social insurance rate changes in advance, and leaders who are unsure how to pass on the notices HR sends out.
The rates and assessment standards for Korea's four major social insurances — National Pension, National Health Insurance, Employment Insurance, and Industrial Accident Compensation Insurance — are not set by the company. They are statutory standards announced each year by the National Pension Service, the National Health Insurance Service, the Ministry of Employment and Labor, and other relevant agencies. These standards can change annually, and once they do, they are reflected in payroll calculations from the designated effective date.
Many employees assume every insurance change happens in January, but in practice the timing and the specifics differ by insurance type.
| Insurance | When changes apply | 2025 | 2026 | Employee share |
|---|---|---|---|---|
| National Pension | Every July (upper/lower limit adjustment) *Rate changes reflected separately |
9% | 9.5% | 4.75% each for employee and employer |
| National Health Insurance | Every January | 7.09% | 7.19% | 3.595% each for employee and employer |
| Long-Term Care Insurance | Every January | 12.95% | 13.14% | Calculated as a ratio of the health insurance premium, shared equally |
| Employment Insurance | January or per Ministry notice | - | 1.8% (total) | 0.9% for the employee |
Social insurance rates change annually because of each fund's financial condition. Rates and the upper and lower income thresholds are adjusted each year in close relation to each insurance fund's finances and the rate of inflation. The National Pension periodically adjusts its rate and the upper and lower limits of standard monthly income with the fund's long-term sustainability in mind. Health insurance and long-term care insurance recalculate their rates each year to reflect rising medical and care expenditures driven by an aging population. Employment insurance is likewise adjusted according to the scale of unemployment benefit payouts and labor market conditions. In other words, it is not that one particular year happens to bring a large increase. The social insurance structure itself is designed to reflect society's fiscal condition year by year. Knowing this makes it easier to respond calmly and accurately to complaints like "they're taking more than usual this year" or "why did my deduction suddenly change in July?"
First, the fact that this change is not a company decision. Social insurance rates and the upper and lower limits of standard monthly income are set and announced by the government by law. The company only reflects those standards in payroll and cannot adjust them at will. Making this clear up front is what prevents the misunderstanding that "the company is taking more."
Second, explaining in actual amounts. Statements like "the rate went up 0.5 percentage points" or "the upper limit changed" mean little to most employees. It only lands when you put it in concrete terms: "on a monthly salary of KRW 3 million, the National Pension deduction went up by KRW 7,500."
Third, the point that the larger deduction comes with a return. National Pension and health insurance premiums are fully deductible from income, so they reduce the tax burden at year-end settlement by that amount. Looking only at the reduced take-home pay feels like a loss, but factoring in the year-end settlement, it is not a complete loss.
A usable way to frame the actual conversation looks like this. Start by removing the room for misunderstanding: "From this month the National Pension and health insurance rates went up a little. This isn't something the company decides — it's a statutory standard the government announces every year, so it applies identically to every company in the country." Then give a concrete figure they can feel: "On a monthly salary of KRW 3 million, it works out to roughly KRW 10,000 more per month." Close with the offset: "You can claim an income deduction at year-end settlement for what you paid, so across a full year the burden isn't as large as it looks." Following this order — the statutory fact, the concrete amount, the offsetting benefit — avoids the improvised explanations that create misunderstandings.
It gets harder when a promotion or bonus payment overlaps with a change in rates or standards. "My pay went up, so why did my take-home barely move?" is the classic question. Here it works well to separate the raise and the increased deduction and show them apart: "Your base pay went up by KRW 200,000, and about KRW 10,000 of that went to the increase in social insurance deductions, so your take-home rose by KRW 190,000." Explaining the two changes in sequence rather than mixing them helps the employee understand why the raise feels smaller than the announced percentage.
Answering "I don't know exactly either" and moving on does not resolve the employee's anxiety. On the other hand, stating something uncertain with confidence is also risky. In particular, if you explain the specific calculation method — rates, movements in the upper and lower limits of standard monthly income — incorrectly, it will not match the actual deduction later and you will lose credibility. Pass questions that require exact figures or individual calculations along with "I'll check the exact amount with HR and get back to you," and as a team lead explain only the direction of the change, the reason for it, and the rough magnitude. You do not have to calculate and explain everything yourself. It also helps to mention in advance that pay levels and deduction items differ from person to person, so the same rate change will feel different in won terms — this reduces the situation where employees compare their deductions with a colleague's and misread the difference.
The best moment is before the pay statement reflecting the rate and threshold changes goes out. If employees hear about the change first and then receive the statement, they read it as "that's the change I was told about" rather than "why did this go down?" Conversely, if the statement arrives with no warning, it is hard to undo the anxiety and misunderstanding even with a later explanation. When HR sends down a rate change notice, simply raising it once in a team meeting or group message can cut individual inquiries considerably.
Organizations using HCG's Payroll Outsourcing (PO) can shed much of this explanatory burden. PO automatically reflects the complex and varied statutory deduction standards in payroll calculations — the annually changing social insurance rates, and adjustments such as the July revision of the National Pension's upper and lower limits. It also provides an environment where each employee can look up their own pay statement and the detailed breakdown of every deduction item directly through ESS (Employee Self-Service). This lets confirmation-type questions about why a deduction changed this month resolve naturally within the system. If more detailed follow-up on an individual item is needed, HCG's dedicated payroll manager provides accurate guidance directly. As a result, the complex individual inquiries and explanatory load that used to concentrate on team leads or the internal HR function are distributed naturally, cutting communication resources substantially.
The team lead's role is simply to convey the direction of the change and the reason for it, while practical verification is handled by the system and HCG's payroll manager working closely alongside. Labor cost statistics reports also let HR see in advance how rate and threshold changes affect total organizational labor costs, which means the point at which team leads are briefed can comfortably be moved up to before the pay statement goes out.