Here we look at each of the public services, and which needs the most funding, according to the IFG's report.
It has graded services, according to need based on which are able to keep up with demand: amber for some concerns and red for significant concerns.
What has already been announced? Theresa May's government announced that annual funding would rise by £20 billion by 2023. Boris Johnson also announced a one-off injection of £1.8bn, but not all of that is agreed to be new money.
Spending on hospitals and GP services in England has risen since 2009-10, although more slowly than in the past.
IFG estimates suggest that the workload of GPs has risen faster than spending, meaning they have had to do more for less.
Despite practices increasing the number of telephone consultations and pooling resources, patients have been waiting longer for appointments.
This suggests that GPs, despite becoming more efficient, have not been able to keep up with demand.