Terms of Service

1. Purpose

These terms set out the conditions and procedures for using Moduncalc (moduncalc.com, the "Service"), and the rights and obligations of users and the operator.

2. What the Service provides

The Service provides free calculators covering salary, savings, loans, real estate, health and taxes. All results are reference estimates based on published policies, rates and statistics, and carry no legal force.

3. Disclaimer

(1) All results and content reflect 2026 tax law and rates, but are provided for reference only and have no legal effect.

(2) The operator accepts no legal liability for any decision you make on the basis of a result, or for its consequences. This includes but is not limited to:

• Opening or closing financial products, taking out loans, investment decisions and any resulting gain or loss
• Whether to enter a property sale or lease, and on what terms
• Tax filing and payment, and any penalty or disadvantage arising from it
• Decisions about resignation, changing jobs, or salary negotiation

(3) The operator does not warrant that results are accurate, complete or current. There may be a delay before amendments to law or official notices are reflected in the Service.

(4) For an exact figure or a legal determination, consult the official materials of the relevant authority — the National Tax Service, your financial institution, the National Pension Service and so on — or a qualified professional such as a tax accountant, lawyer, labor attorney or physician. The Service does not substitute for professional advice.

(5) The Service may be changed or discontinued without prior notice.

(6) These disclaimers apply to the fullest extent permitted by applicable law. Further detail is in the Disclaimer.

4. Personal data

The Service can be used without registration, and the values you enter are not stored on our servers. Handling of personal data is governed by the Privacy Policy.

5. Advertising

The Service may display third-party advertising, including Google AdSense, to cover operating costs. Responsibility for the content of an advertisement rests with the advertiser.

6. Prohibited use

You must not:

• Place excessive load on the Service through automated means such as crawlers, scrapers or bots
• Copy the Service's calculation logic, data or design without permission in order to offer an identical or similar service
• Interfere with normal operation of the Service or exploit security vulnerabilities
• Present or distribute a result from the Service to third parties as though it were an official determination
• Use the Service in violation of applicable law or to infringe the rights of others

Where such conduct is identified, the operator may restrict access without prior notice.

7. Intellectual property and quotation

(1) Copyright in the Service's design, source code, calculation logic and written content belongs to the operator. Reproduction, redistribution and derivative works are not permitted without consent.

(2) You may quote results and portions of the text in blogs, articles or teaching materials, provided you attribute moduncalc.com and include a link to the page.

(3) You may publish a calculator on an external site using the Service's embed feature, but you must not modify the embed code or remove the attribution.

(4) Rights in public data cited by the Service — statutes, official notices, statistics — remain with their respective rights holders and the responsible authorities.

8. Interruption of the Service

The operator may suspend all or part of the Service temporarily for maintenance, equipment failure, force majeure or other unavoidable cause. As the Service is provided free of charge, the operator bears no separate liability for loss arising from such interruption.

9. Changes to these terms

These terms may be revised to reflect changes in law or in the Service, and any change will be announced on this page. A revision takes effect on the day it is announced. Continuing to use the Service after a revision is taken as acceptance of it.

10. Governing law and disputes

These terms and any dispute concerning use of the Service are governed by the laws of the Republic of Korea. The operator and the user will seek to resolve any dispute in good faith; failing that, either may bring an action before the court having jurisdiction under the Korean Civil Procedure Act.

11. Contact

For questions about use of the Service, interpretation of these terms, copyright or partnerships: taeyang.kim4875@gmail.com

This is the English edition of our terms. The Korean edition is available at /terms. In the event of any inconsistency, the Korean edition governs, as the Service is operated from the Republic of Korea.

Last updated: 28 October 2026