1. Income subject to income tax according to the rules applicable to salaries, pensions or life annuities or in the categories of industrial and commercial profits, agricultural profits, non-commercial profits and property income, with the exception of the income mentioned in article 204 D, give rise, in the year in which the taxpayer disposes of them or they are realised, to a levy.
2. The deduction takes the form:
1° For the income mentioned in article 204 B, of a deduction at source made by the debtor when the income is paid;
2° For the income mentioned in article 204 C, of an instalment paid by the taxpayer.
3. The deduction made by the debtor or paid by the taxpayer is deducted from the income tax due by the latter in respect of the year in which it was made. If it exceeds the tax due, the excess is refunded.