---
title: What about DUoS Tariff ID?
description: "As part of MHHS, you may hear the **LLF** referred to as the **DUoS Tariff ID**. Our software supports the values provided through Supplier and industry feeds. For questions about DUoS Tariff IDs or charges, please contact your supplier/s directly."
url: "https://utiliversity.com/faq/what-about-duos-tariff-id/"
updated: "2025-09-24"
category: MHHS
---

# What about DUoS Tariff ID?

As part of MHHS, you may hear the **LLF** referred to as the **DUoS Tariff ID**. Our software supports the values provided through Supplier and industry feeds. For questions about DUoS Tariff IDs or charges, please contact your supplier/s directly.