A $630 million counter-terrorism funding boost the Abbott government announced six months ago has still not begun to flow to the country's national security agencies, Fairfax Media can reveal.

The money is not expected to start reaching agencies such as ASIO, the Australian Federal Police and the Australian Crime Commission until April.

Former prime minister Tony Abbott could command more than $40,000 per international speaking engagement. Credit:Andrew Meares

Agencies have meanwhile been forced to dip into their existing budgets to fund priorities such additional police officers to tackle the foreign fighter threat, counter-terrorism units at airports and financial experts to track jihadi money.

In his major national security address on Monday, Prime Minister Tony Abbott said: "Last August, the government invested $630 million in a range of new counter-terrorism measures … The effect of these new measures has already been felt."