Assessment forecast

The Assessment forecast page provides an estimate of your total taxes and contributions for the current year. The calculation uses only completed salary periods and can project the result to a full year.

What the forecast is based on

NettoWise uses all completed salary periods in the selected tax year. It then calculates:

• Income tax box 1
• National insurance contribution
• Income-related Health Insurance Act contribution (Zvw)

Projection on or off

With the Projection toggle you decide whether NettoWise extrapolates the filled months to a full year.

• Off: you only see what has been calculated so far.
• On: the amount is scaled to 12 months based on the number of completed months.

What you see per block

The page is split into two main blocks:

Income tax and national insurance

This block shows the box 1 tax and the national insurance contribution. The table also shows how the base is distributed across the tax brackets and which rates apply.

Zvw contribution

This block shows the income-related Zvw contribution. The base is your profit and is capped at the yearly maximum.

Why the outcome can change

The forecast changes when you:

• Complete new salary periods
• Update deductions, costs, or income
• Toggle projection on or off