Korea Visa Invitation Letter: What to Write, Who Signs,…

One page. Signed by someone you trust.

That page often decides whether your parents, partner, or business guest gets a Korean visa. You’ve picked the dates. Your family is ready to book flights. Then the embassy checklist says “invitation letter” and explains almost nothing else. Do you write it by hand? Does it need a stamp? Does someone have to sign it in front of a notary?

This guide answers those questions with official sources from the Korea Visa Portal, HiKorea, and the Immigration Act. It covers short visits first. Then it covers the long-term version, which works very differently. C-3 short-term visit visa

Why does one letter carry so much weight?

An invitation letter tells the Korean embassy or consulate who is inviting the applicant, why, for how long, and who pays. For short visits on a C-3 visa, it helps the consul judge whether the guest will leave on time. For long stays, Korea usually uses a formal document called a CCVI instead. Your visa type decides which one you need.

Look at it from the consul’s side. They have a stranger’s passport in front of them. The letter is the only link between that stranger and a real person in Korea who is willing to vouch for them.

In Korean, the letter is called a chochongjang (invitation letter). Korean-language checklists at many missions use that word.

Who actually needs one?

Not everyone. Citizens of visa-exempt countries don’t apply for a short-term visa at all. They enter under visa exemption and may need a K-ETA (Korea Electronic Travel Authorization) instead. Check the K-ETA site for your nationality.

The letter matters most for nationals who need a visa even for short trips. Missions in high-volume countries such as China, Vietnam, the Philippines, and Indonesia often list it as a standard document for family and business visits.

Short-term visits usually cover stays of up to 90 days. Anything longer falls under the long-term visa system.

So what’s in a letter that gets through the first review? That comes next.

What goes into a letter that passes the first read?

Korea has no single nationwide template for C-3 invitation letters. Embassies still look for the same core facts: who invites, who is invited, how they’re related, why they’re coming, the exact dates, where they’ll stay, and who pays. The inviter signs and dates the letter. If even one fact is missing, the mission often asks for more documents, and the visa takes longer.

Most missions list the invitation letter format requirements below. Use them as a checklist.

1. Inviter details. Full name, date of birth, nationality, resident registration number or ARC number, address, and phone number.
2. Invitee details. Full name exactly as printed on the passport, passport number, date of birth, and nationality.
3. Relationship. Write “mother,” “business partner,” or “fiancée,” not something vague.
4. Purpose. “Attend my graduation ceremony on February 20” works better than “sightseeing.”
5. Dates. Arrival and departure dates that match the flight reservation.
6. Address in Korea. Where the guest will sleep.
7. Costs. Who pays for flights, lodging, and daily expenses.
8. Signature and date. The inviter’s handwritten signature. Business letters usually carry the company seal too.

Most Korean missions accept letters in Korean or English. Some also want a translation into the local language. Read your mission’s checklist before you print.

Keep it to one page. A short, specific letter is more believable than three pages praising the guest.

Here’s the catch. On its own, the letter is just a claim. The embassy wants proof for every line, and the sponsor provides that proof.

Which sponsor documents make the letter believable?

For a family visit, the sponsor in Korea usually attaches proof of ID, proof of the relationship, and sometimes proof of income or employment. Some missions also ask for an identity guarantee letter. That is a separate pledge under the Immigration Act. In it, the sponsor promises to cover the guest’s costs and make sure the guest leaves on time.

What goes into the sponsor package for a family visit invitation letter depends on who you are.

If the sponsor is a Korean citizen

• A copy of the resident registration card.
• A family relation certificate (gajok gwangye jeungmyeongseo). You can print it from Government24 or the Supreme Court’s family registration portal.
• Proof of income, if the mission asks. This can be an income certificate from the National Tax Service through Hometax, or an employment certificate from your employer.

If the sponsor is a foreign resident

• A copy of both sides of your ARC.
• Proof of relationship, usually a birth or marriage certificate from your home country.
• Proof of income or employment in Korea.

Foreign residents on work, residence, or marriage visas often invite parents and siblings. But the consul checks your own status more closely. Is your ARC valid past the visit dates? Does your income look enough to support a guest? ARC renewal extension documents

The identity guarantee letter

In Korean this is the sinwon bojeungseo, and it carries more responsibility than an invitation. Article 90 of the Immigration Act lets the Ministry of Justice require a guarantor for a foreigner. If the guest overstays or has to be removed, the guarantor can be asked to pay the related costs. You can read the English text of the Act on MOLEG.

Don’t sign one casually. It takes on real financial responsibility.

What about stamps and seals? This is where most people spend money they didn’t need to.

Does your letter need notarization or an apostille?

Usually not. A letter the inviter writes and signs in Korea is a private document, and most missions accept it as it is. An apostille certifies a public document so another country will accept it. You mainly need one for supporting papers issued in another country, such as a birth certificate that proves your relationship. You also need one when a mission clearly asks for a notarized letter.

This is how notarization and apostilles apply to an invitation letter.

Korea joined the Hague Apostille Convention in 2007. A public document from another member country that carries an apostille is generally accepted in Korea without further consular legalization. It also works the other way. Korean public documents with a Korean apostille are accepted in other member countries.

A private letter can’t get an apostille directly. A Korean notary office has to notarize it first. After that, the Ministry of Foreign Affairs can apostille it.

When would you actually need this?

• Your relationship proof comes from abroad. A foreign sponsor who has to prove they are the guest’s child may need a birth certificate from their home country. If that country is an Apostille member, get the apostille there. If it isn’t, you need consular legalization.
• The mission asks for it in writing. Some missions want the signature on a guarantee letter verified. In Korea, that usually means the sponsor’s registered seal certificate (ingam jeungmyeongseo) or a certificate of personal signature from a community service center.
• A country other than Korea asks for it. For example, a third country’s embassy may want a notarized Korean invitation. That process is separate from the Korean visa.

Notarization takes money and time. Only do it when the checklist asks for it.

But short visits are only half the story. Long stays use a completely different system.

How does a long-term invitation work on HiKorea?

For work, study, or marriage, Korea often uses a Certificate for Confirmation of Visa Issuance (CCVI) instead of a plain letter. The inviter applies from inside Korea, at an immigration office or online. After approval, the foreigner uses the CCVI number to get the visa at a Korean mission. A CCVI is valid for three months and can be used only once.

In Korean, it’s called sajeung balgeup injeongseo. It is the real long-term visa invitation letter, because the inviter starts the process, not the applicant.

Under Article 9 of the Immigration Act, the Minister of Justice may, at the request of a person who intends to invite a foreigner, issue a certificate for confirmation of visa issuance in advance. (Summary of the MOLEG English translation)

Who uses a CCVI?

• Employers inviting E-7 skilled workers and other work-visa holders.
• Korean spouses inviting a foreign spouse on an F-6 marriage migrant visa. The F-6 has its own official invitation form, plus income and housing proof. For some nationalities, the Korean spouse also needs a certificate from the International Marriage Guidance Program.
• Schools and institutions in some cases. Many D-2 students, though, apply at the embassy with an admission letter instead.

Where HiKorea fits in

Many inviters use HiKorea to book an immigration office visit and track their applications. The Korea Visa Portal handles online CCVI applications for eligible inviters. It also lets you check visa status and print e-visas.

The usual order looks like this:

1. The inviter gathers documents: ID, business or income proof, and the invitation form for that visa type.
2. The inviter applies at the immigration office that covers their address, or online if eligible.
3. The Korea Immigration Service reviews the case.
4. If it’s approved, the inviter sends the CCVI number to the foreigner.
5. The foreigner applies for the visa at a Korean embassy or consulate within 3 months.

Not sure which office covers you? Call the Immigration Contact Center at 1345. It offers help in several languages. F-6 marriage visa requirements

Now you know the paperwork. So why do genuine invitations still get refused?

Which mistakes quietly sink an invitation?

Most problems come from details that don’t match, not from missing forms. The spelling on the letter differs from the passport. The dates don’t match the flight booking. The sponsor’s income looks too low for the support promised. Or the purpose is vague. Consuls have wide discretion and don’t always explain a refusal, so fix every inconsistency before you submit.

In a weak file, every small gap makes the consul ask the same question: will this person leave on time?

Five mismatches to check

• Name spelling. Copy the name from the passport’s machine-readable line exactly. “Nguyen Thi Lan” and “Nguyen Lan” look like two different people.
• Dates. The letter says two weeks, but the flight hold says six. That’s a red flag.
• Relationship proof. You wrote “aunt,” but the documents only show a family link through a sibling. Attach every certificate in the chain.
• Money. You promise to pay for everything, but your income certificate shows part-time earnings. Add savings, or a co-sponsor if the mission allows one.
• Sponsor status. Your ARC expires before the guest leaves. Renew it first. ARC renewal grace period late extension

Fees and timing

The Korea Visa Portal lists the standard single-entry short-term visa fee as USD 40. Reciprocity agreements change it for some nationalities. Processing times differ by mission. Apply several weeks before the trip, not a few days before.

Some missions limit how soon you can reapply after a refusal. Getting it right the first time saves you time as well as money.

Your next three steps

1. Find your guest’s embassy checklist on the Korea Visa Portal. Note every document it lists, including translations and seals.
2. Draft the letter with the eight-point checklist above. Match names and dates to the passport and the flight hold.
3. Get your sponsor documents from Government24 or your employer. Then check whether anything really needs notarization.

For long stays, don’t use a plain letter. Start the CCVI application in Korea, and send your guest the number once it’s approved.