# stdnum.id.npwp

NPWP (Nomor Pokok Wajib Pajak, Indonesian VAT Number).

The Nomor Pokok Wajib Pajak (NPWP) is assigned to organisations and individuals (families) by the Indonesian Tax Office after registration by the tax payers.

The number consists of 16 digits and is either a NIK (Nomor Induk Kependudukan) or a number that starts with a 0, followed by 2 digits that denote the type of entity, 6 digits to identify the tax payer, a check digit over the first 8 digits followed by 3 digits to identify the local tax office and 3 digits for branch code.

This module also accepts the old 15 digit format which is just the 16 digit format without the starting 0.

More information:

- https://www.oecd.org/tax/automatic-exchange/crs-implementation-and-assistance/tax-identification-numbers/Indonesia-TIN.pdf

- https://metacpan.org/pod/Business::ID::NPWP

- https://wiki.scn.sap.com/wiki/display/CRM/Indonesia

    >>> validate('01.312.166.0-091.000')
    '013121660091000'
    >>> validate('016090524017000')
    '016090524017000'
    >>> validate('123456789')
    Traceback (most recent call last):
        ...
    InvalidLength: ...
    >>> format('013000666091000')
    '01.300.066.6-091.000'

stdnum.id.npwp.compact(number: str) → str

  Convert the number to the minimal representation.

  This strips the number of any valid separators and removes surrounding whitespace.

stdnum.id.npwp.format(number: str) → str

  Reformat the number to the standard presentation format.

stdnum.id.npwp.is_valid(number: str) → bool

  Check if the number is a valid Indonesia NPWP number.

stdnum.id.npwp.validate(number: str) → str

  Check if the number is a valid Indonesia NPWP number.