Contracted services

MCC 1799

Special Trade Contractors (Not Elsewhere Classified)

Merchant category for Special Trade Contractors (Not Elsewhere Classified), listed in the cited Visa and Mastercard material. See the code page for scheme-specific wording and evidence status.

Assignment guidance

When MCC 1799 should be used

When the merchant's primary business matches Special Trade Contractors (Not Elsewhere Classified) under the applicable scheme rules.
After confirming the current scheme, region, programme, and acquirer requirements.

Boundary guidance

When MCC 1799 should not be used

When another, more specific MCC better describes the merchant's primary business.
Based on the code title alone without checking current scheme and regional requirements.

Scheme comparison

Names and evidence status

Absence from public material is not treated as proof that a scheme does not use the MCC.

Scheme-specific wording and evidence status for MCC 1799
Scheme	Evidence	Scheme wording	Comparison
Visa	Official	Special Trade Contractors (Not Elsewhere Classified)Global Visa merchant-data manual, April 2026, PDF page 30.	Aligned wording
Mastercard	Official	Contractors, Special Trade; not elsewhere classifiedMastercard Merchant Edition reference, 16 April 2024, PDF page 46.	Different wording
American Express	Publicly not found	No current public definition locatedThe complete American Express Codes Reference Guide is not public. This is not evidence that the MCC is unsupported.	Not available
Discover / Diners Club	Publicly not found	No current public definition locatedNo complete current public Discover / Diners Club MCC catalogue was located. This is not evidence that the MCC is unsupported.	Not available
UnionPay	Not reviewed	No global definition reviewedThe official material reviewed so far is limited to EEA fee appendices and is not a global definition catalogue.	Not available

Provenance

Sources reviewed

Visa Merchant Data Standards ManualApril 2026 · global · official · PDF page 30
Mastercard Quick Reference Booklet - Merchant Edition16 April 2024 · official · PDF page 46

SchemeLens descriptions and use boundaries are editorial summaries of the cited material. Final MCC assignment depends on the merchant's primary business, current scheme rules, region, programme, and acquirer requirements.