Specialist chocolate shop Koko Black plans to keep operating despite the appointment of voluntary administrators.

Accounting firm Deloitte was appointed as voluntary administrators to the Melbourne-based family company on Tuesday.

The chocolate retailer and cafe chain was founded in 2003 with a single store in Melbourne's Royal Arcade and now has 14 chocolate cafes around Australia.

Joint voluntary administrator Sal Algeri from Deloitte said Koko Black would keep operating as normal.

"The business expanded very rapidly and undertook a series of major projects over the past 18 months," Mr Algeri said.

"The level of activity was beyond the resources of the business."

He said Deloitte would look at options to restructure the firm and inject more money into the business while Koko Black kept trading.

"Our appointment will not have any impact on Koko Black's operations," Mr Algeri said in a statement.

It's important that customers, suppliers and employees understand that it's business as usual.

"Christmas is historically the strongest trading period of the year and we urge everyone to support the business during this time."

Koko Black employs 300 people in retail and manufacturing in Australia.

Its recently-opened cafe in Queenstown in New Zealand is not affected by the administration.

The first creditors meeting will take place next week.