Which factor is essential for admitting a new partner to a partnership firm?

Unanimous agreement of existing partners

For admitting a new partner to a partnership firm, the unanimous agreement of the existing partners is typically essential. This means that all the current partners must agree and give their consent to the admission of a new partner. The partnership deed may also specify the requirements and procedures for admitting a new partner, but the unanimous agreement of the existing partners is a fundamental factor in the decision-making process.