Web · Public finance
An interactive budget calculator
How an interactive public-finance model can make the consequences of tax and spending changes easier to understand.
Challenge
State budgets are discussed constantly, but it is hard to see how individual decisions add up. Journalists, policymakers and the public need a way to check the consequences of changing a tax or a budget line.
Approach
We connect budget lines in an interactive model. Changes to income tax, VAT, contributions, corporate income tax or spending by area recalculate the balance as you go. The methodology and assumptions need to be documented so the calculations can be checked.
Expected benefits
Users can compare scenarios, adjust individual assumptions and check the basic calculations. The model makes the impact of decisions on public finances easier to explain.
This is a method note: it describes how we approach this kind of problem, not a write-up of a named client.
What it can do
- Adjust the revenue side — income-tax rates and brackets, general allowances, social-contribution rates and caps, corporate income tax (DDPO), VAT, and employer/employee contributions.
- Adjust the expenditure side — spending targets and growth paths by sector, and deficit or surplus goals.
- See the balance move — the projected budget balance recalculates as you change any assumption.
Built for scrutiny
- Ready-made scenarios that make different decisions easy to compare.
- Every scenario can be adjusted and the calculations reviewed.
- Clearly stated assumptions plus methodology and calculations that can be checked.
Explaining public finances
An interactive model shows how changes to taxes and spending affect the budget balance. Users can compare decisions under clearly stated assumptions, supporting analysis and explanations of public finances.
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