As @matt says, all of the data is there, but pulling it together is not trivial.
@matt is correct that Savings is the hardest part. There are ~26 columns (P:AQ) required in the hidden part of the Savings Budget template to calculate the Savings (in real time) for the currently selected month. You’d essentially need to replicate these queries, lookups and calculations— for each month— to pull this off. It is possible but it will be complicated, take a lot of real estate and won’t be particularly performant (though there is probably some redundancy in those hidden columns such that many months of calcs can be done a little more lean-ly than a single month).
I agree that Budget, Actual and Available are easy— you can just borrow formulas from the Yearly Budget sheet.
Let us know if you decide to go for it, @DannyD. Would be cool to have a Yearly Savings Budget!