てもかまわない【～てもかまわない】

The grammar structure ～てもかまわない expresses that something is acceptable or that the speaker doesn't mind if something happens. It combines the ても ("even if") form with かまわない ("don't mind / don't care"), literally meaning "even if ~, it doesn't matter." It is used to grant permission, express tolerance, or indicate indifference toward a situation.

Giving or expressing permission

Similar to ～てもいい, this pattern can be used to say that something is allowed or acceptable. It carries a slightly more formal or detached tone than ～てもいい.

Expressing indifference or tolerance

It can also express that the speaker genuinely doesn't care about the outcome, conveying a sense of "it makes no difference to me."

Structure

• Verb[て]
  • もかまわない:
    かえって帰ってもかまわない。

    You may go home.
• い-adjective → くてもかまわない:
  やすくて安くてもかまわない。

  I don't mind if it's cheap.
• な-adjective → でもかまわない:
  かんたん簡単でもかまわない。

  I don't mind if it's simple.
• Noun
  • でもかまわない:
    ちゅうこ中古でもかまわない。

    I don't mind if it's secondhand.

Politeness

In polite speech, かまわない becomes かまいません. The polite form is used in business settings and formal conversations.

Related expressions

Compared to ～てもいい, ～てもかまわない sounds slightly more formal and can emphasize that the speaker truly has no objection. It is also sometimes used when accepting something that might normally be considered a drawback or inconvenience.