Hi Ollie
The process that needs to be followed will depend on the following:
1. terms of the Will (it may specify that any assets are to be held on trust until you reach the age of 25);
2. where the cash is held (the bank or Super Fund trustee holding the cash may have a policy that they refuse to release cash over a certain amount without Probate, certainly they will have a standard policy to request the signed agreement of all 3 Executors before releasing the funds);
3. what other assets (if any) form part of the Estate –– if there is Real Estate (Probate is mandatory). If Probate is not required to distribute the estate, it is up to the 3 Executors to decide whether to apply for Probate or not – they may still decide to apply for Probate as this protects them from anyone making a claim against them, if another later Will is discovered (for example);
4. whether any other members of the family decide to make a "family provision claim" (dispute the Will) which can hold everything up even longer if it goes to Court.
If Probate is applied for, there will be delays whilst the process is followed. It involves advertising for the existence of any other copies of a Will, as well an application to the Supreme Court. Once Probate is granted, the estate can be distributed.
The cash will not go directly to you. It must pass through the Estate first.
If the 3 Executors hold up the process and do not take action in a reasonable timeframe, you can apply to the Supreme Court to force this to happen.
If you do not have a copy of the Will (as the sole beneficiary you are definitely entitled under the relevant state legislation to inspect the Will and make a copy at your own expense) I recommend you make a request in writing for a copy as soon as practical.
As you can see it is a complex process, please let me know if I can assist you further.
Kind regards, James.