This year's Draft Budget is to be announced later today and, for the first time, the Welsh Government will be responsible for setting it's own Land Transaction Tax, replacing Stamp Duty.
The Welsh Government will now be responsible for raising money as well as spending it.
Ahead of the publication of the draft budget, the Finance Secretary Mark Drakeford visited the Glan Llyn housing development in Llanwern, Newport. The development, on the site of the former Llanwern Steelworks, will provide affordable housing in the city.
He says the move to give Wales powers over its own Land Transaction Tax is a net step in devolution.
When asked if the £250m in revenue is not made from the move, the Secretary said there is a safety net for Wales in the fiscal framework meaning they can borrow money over a short period of time to help smooth out any peaks and troughs, though he said he is 'hopeful we won't need to use it'.
This is the first time the budget is being delivered in two stages. This will give the Assembly a period of two to three weeks to focus on decisions which will be announced in the budget later. This will be followed in three weeks time with detailed budgets.