> ## Documentation Index > Fetch the complete documentation index at: https://docs.numeral.com/llms.txt > Use this file to discover all available pages before exploring further. # Tax IDs Tax IDs identify a business for tax purposes. They appear in two places in the Numeral API: * **Merchant profiles** — stored on a merchant to identify the selling entity for documentation and reporting. Set when creating or updating a merchant via `POST /tax/merchants`. * **Calculation requests** — passed on `customer.tax_ids` when the customer type is `BUSINESS`. Numeral uses the tax ID to determine whether reverse-charge or zero-rate rules apply — for example, a VAT-registered business purchasing across EU borders may owe zero tax rather than the standard rate. A tax ID has two fields: `type` (from the table below) and `value` (the actual number): ```json theme={null} { "tax_ids": [ { "type": "gb_vat", "value": "GB123456789" } ] } ``` An object can hold more than one tax ID — for example, a business registered in both the US and the EU: ```json theme={null} { "tax_ids": [ { "type": "us_ein", "value": "12-3456789" }, { "type": "eu_vat", "value": "DE123456789" } ] } ``` For customers, `tax_ids` is required for `BUSINESS` type outside the US, and not allowed for `CONSUMER` type. *** ## Supported Tax ID Types | Type | Country | Description | | ------------ | ---------------------- | ----------------------------------------------- | | `ad_nrt` | Andorra | NRT (Número de Registre Tributari) | | `ae_trn` | United Arab Emirates | TRN (Tax Registration Number) | | `al_tin` | Albania | TIN | | `am_tin` | Armenia | TIN | | `ao_tin` | Angola | TIN | | `ar_cuit` | Argentina | CUIT (Clave Única de Identificación Tributaria) | | `au_abn` | Australia | ABN (Australian Business Number) | | `au_arn` | Australia | ARN (ATO Reference Number) | | `aw_tin` | Aruba | TIN | | `az_tin` | Azerbaijan | TIN | | `ba_tin` | Bosnia and Herzegovina | TIN | | `bb_tin` | Barbados | TIN | | `bd_bin` | Bangladesh | BIN (Business Identification Number) | | `bf_ifu` | Burkina Faso | IFU (Identifiant Financier Unique) | | `bg_uic` | Bulgaria | UIC (Unified Identification Code) | | `bh_vat` | Bahrain | VAT number | | `bj_ifu` | Benin | IFU | | `bo_tin` | Bolivia | TIN | | `br_cnpj` | Brazil | CNPJ (Cadastro Nacional da Pessoa Jurídica) | | `br_cpf` | Brazil | CPF (Cadastro de Pessoas Físicas) | | `bs_tin` | Bahamas | TIN | | `by_tin` | Belarus | TIN | | `ca_bn` | Canada | BN (Business Number) | | `ca_gst_hst` | Canada | GST/HST number | | `ca_pst_bc` | Canada | PST — British Columbia | | `ca_pst_mb` | Canada | PST — Manitoba | | `ca_pst_sk` | Canada | PST — Saskatchewan | | `ca_qst` | Canada | QST (Quebec Sales Tax) | | `cd_nif` | Congo | NIF | | `ch_uid` | Switzerland | UID (Unternehmens-Identifikationsnummer) | | `ch_vat` | Switzerland | VAT number | | `cl_tin` | Chile | TIN | | `cm_niu` | Cameroon | NIU (Numéro d'Identification Unique) | | `cn_tin` | China | TIN | | `co_nit` | Colombia | NIT (Número de Identificación Tributaria) | | `cr_tin` | Costa Rica | TIN | | `cv_nif` | Cape Verde | NIF | | `de_stn` | Germany | STN (Steuernummer) | | `do_rcn` | Dominican Republic | RCN | | `ec_ruc` | Ecuador | RUC (Registro Único de Contribuyentes) | | `eg_tin` | Egypt | TIN | | `es_cif` | Spain | CIF (Código de Identificación Fiscal) | | `et_tin` | Ethiopia | TIN | | `eu_oss_vat` | European Union | OSS VAT (One Stop Shop) | | `eu_vat` | European Union | VAT number | | `gb_vat` | United Kingdom | VAT number | | `ge_vat` | Georgia | VAT number | | `gh_tin` | Ghana | TIN | | `gn_nif` | Guinea | NIF | | `hk_br` | Hong Kong | BR (Business Registration Number) | | `hr_oib` | Croatia | OIB (Osobni identifikacijski broj) | | `hu_tin` | Hungary | TIN | | `id_npwp` | Indonesia | NPWP (Nomor Pokok Wajib Pajak) | | `il_vat` | Israel | VAT number | | `in_gst` | India | GST number | | `is_vat` | Iceland | VAT number | | `jp_cn` | Japan | CN (Corporate Number) | | `jp_rn` | Japan | RN (Registered Number) | | `jp_trn` | Japan | TRN | | `ke_pin` | Kenya | PIN (Personal Identification Number) | | `kg_tin` | Kyrgyzstan | TIN | | `kh_tin` | Cambodia | TIN | | `kr_brn` | South Korea | BRN (Business Registration Number) | | `kz_bin` | Kazakhstan | BIN (Business Identification Number) | | `la_tin` | Laos | TIN | | `li_uid` | Liechtenstein | UID | | `li_vat` | Liechtenstein | VAT number | | `ma_vat` | Morocco | VAT number | | `md_vat` | Moldova | VAT number | | `me_pib` | Montenegro | PIB (Poreski identifikacioni broj) | | `mk_vat` | North Macedonia | VAT number | | `mr_nif` | Mauritania | NIF | | `mx_rfc` | Mexico | RFC (Registro Federal de Contribuyentes) | | `my_frp` | Malaysia | FRP | | `my_itn` | Malaysia | ITN (Income Tax Number) | | `my_sst` | Malaysia | SST (Sales and Service Tax) | | `ng_tin` | Nigeria | TIN | | `no_vat` | Norway | VAT number | | `no_voec` | Norway | VOEC (VAT on E-Commerce) | | `np_pan` | Nepal | PAN (Permanent Account Number) | | `nz_gst` | New Zealand | GST number | | `om_vat` | Oman | VAT number | | `pe_ruc` | Peru | RUC (Registro Único de Contribuyentes) | | `ph_tin` | Philippines | TIN | | `ro_tin` | Romania | TIN | | `rs_pib` | Serbia | PIB (Poreski identifikacioni broj) | | `ru_inn` | Russia | INN (Individual Taxpayer Number) | | `ru_kpp` | Russia | KPP (Tax Registration Reason Code) | | `sa_vat` | Saudi Arabia | VAT number | | `sg_gst` | Singapore | GST number | | `sg_uen` | Singapore | UEN (Unique Entity Number) | | `si_tin` | Slovenia | TIN | | `sn_ninea` | Senegal | NINEA | | `sr_fin` | Suriname | FIN | | `sv_nit` | El Salvador | NIT (Número de Identificación Tributaria) | | `th_vat` | Thailand | VAT number | | `tj_tin` | Tajikistan | TIN | | `tr_tin` | Turkey | TIN | | `tw_vat` | Taiwan | VAT number | | `tz_vat` | Tanzania | VAT number | | `ua_vat` | Ukraine | VAT number | | `ug_tin` | Uganda | TIN | | `us_ein` | United States | EIN (Employer Identification Number) | | `uy_ruc` | Uruguay | RUC | | `uz_tin` | Uzbekistan | TIN | | `uz_vat` | Uzbekistan | VAT number | | `ve_rif` | Venezuela | RIF (Registro de Información Fiscal) | | `vn_tin` | Vietnam | TIN | | `za_vat` | South Africa | VAT number | | `zm_tin` | Zambia | TIN | | `zw_tin` | Zimbabwe | TIN |