A Follow-up Wage tax Payroll taxes
B Sales tax
F Postage tax VAT
H Income tax / national insurance premium
J Refund Wage tax Wage tax
K Wealth tax
L Payroll tax
M Motor vehicle tax
O Turnover tax refund
S Premium health insurance scheme for the self-employed (up to and including 2005)
V Corporate tax
W Health Insurance Act (just a tax)
Y Motor vehicle tax withholding tax
The attack numbers all start with the tax number and for a private persson / company with the BSN (social security number).
Immediately after the letter, the first number indicates the year. eg:
H.20 to H.25 concerns the provisional income tax assessment 2012.
H.26 concerns the final assessment 2012.
H.27 to H.29 the post-acceptance assessment.
B.02 = the second VAT number
B.01.2240 = sales tax declaration 2nd quarter 2012
A.01.2090 = Additional income tax contribution September 2012
010 tm 120 = January m December
210 = 1st quarter
240 = 2nd quarter
270 = 3rd quarter
300 = 4th quarter
400 = annual declaration
500 = supplement declaration
710 tm 830 = period 1 (770) tm period 13 (830) for a 4-week declaration