Taxpayers can expect to get through to the Australian Taxation Office call centre more quickly thanks to a new automated voice authentication system for identity checks.

The ATO hopes the new system will shave up to 45 seconds off each of the several-million calls it receives every year.

The ATO hopes its new voice identification system will save operators and taxpayers time. Credit:Michelle Mossop

Dubbed "voiceprint", the ATO has already enrolled about 30,000 people to use the new service, which asks taxpayers to repeat a phrase to prove their identity.

The new system verifies that the voice matches the voiceprint originally enrolled with a particular tax file number. It also checks what was said to provide an added layer of security.