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GSA’s professional services portfolio provides a full range of acquisition services. From training to scope reviews, statement of work development to contracting support services, we are committed to helping you find the contract solution you need for your professional services acquisition. Below are some quick references.
We offer a scope review capability that analyzes the scope of your task order requirement. This service can help reduce the risk of protest and is a benefit of working with us.
A Civilian Services Acquisition Workshop (SAW or CSAW) is a facilitated requirements development workshop built around a specific acquisition and its multi-functional integrated project team. The workshop walks the complete team through the Steps to Performance Based Acquisition, PBA, process from beginning to end. Learn more and get started now.
These reference guides are excellent resources:
Use the Contract Closeout Quick Reference Guide [PDF - 172 KB] for contract closeout best practices and recommendations.
| Award and order topic | Checklist |
|---|---|
| How to issue an FSS order for Professional Services | FSS Order Checklist [PDF - 237 KB] |
| How to issue an order under an established FSS BPA for Professional Services | FSS BPA Order Checklist [PDF - 236 KB] |
| How to establish a multiple award FSS BPA for Professional Services | FSS Multiple Award BPA Establishment Checklist [PDF - 237 KB] |
| How to establish a single- award FSS BPA for Professional Services | FSS Single Award BPA Establishment Checklist [PDF - 245 KB] |
Download the official MAS- PS old SIN to new SIN/NAICS Code Crosswalk Table [XLSX - 92 KB], where you will find the new SINs associated with MAS- PS Catalog H (00CORP) for making your offer.
The above Crosswalk Table has been excerpted from the Available Offerings and Requirements webpage. Select the Available Offerings Attachment [XLSX - 701 KB] to view the “Legacy Schedule SIN to Consolidated” tab.
Our team can also help with:
Email us at professionalservices@gsa.gov
| NAICS | Document Name | Description |
|---|---|---|
| 541211 | 541211 Civilian Contract Auditing Services Ordering Guide - December 2025.pdf [PDF - 473 KB] | This ordering guide assists in procuring Civilian Contract Auditing Services under MAS SIN 541211, which includes financial, performance, and contract audits performed in accordance with Generally Accepted Government Auditing Standards (GAGAS). |
| 541330 | 541330ENG Construction Management and Engineering Consulting Services Ordering Guide - December 2025.pdf [PDF - 293 KB] | This ordering guide defines the scope and application of Real Property Management Services (RPMS) under the subgroup for MAS SIN 541330ENG, which encompasses construction management and engineering consulting services related to real property. |
| 541611 | 541611 Program Evaluation Services Subgroup - December 2025.pdf [PDF - 206 KB] | This ordering guide outlines the ordering procedures for Program Evaluation Services under the subgroup for MAS SIN 541611, which was established to provide a government-wide solution for efficient procurement of program evaluation services. Services include assessments using systematic data collection and analysis of one or more programs, policies, and organizations intended to assess their effectiveness and efficiency, as defined in OMB Memorandum M-20-12. |
| 541930 | 541930 Translation and Interpretation Services Ordering Guide - December 2025.pdf [PDF - 282 KB] | This ordering guide assists agencies and procurement officers in using the GSA Language Services Schedule to purchase language services under SIN 541930. It covers legal requirements, service descriptions, and best practices for procurement. |
| 541990 | 541990IPS Identity Protection Services Ordering Guide - December 2025.pdf [PDF - 181 KB] | The redefined SIN 541990IPS provides a total solution for identity protection services. It covers: identity monitoring and notification of Personally Identifiable Information (PII) and Protected Health Information (PHI), identity theft insurance and restoration services, and protection (safeguard) of PII and PHI. |
| 562112 | 562112 Hazardous Waste Disposal Services Ordering Guide - December 2025.pdf [PDF - 310 KB] | This ordering guide describes the process for agency users to order services under Special Item Number (SIN) 562112. Services include management and oversight of hazardous material (HAZMAT) disposal operations, and management, oversight, and recycling of universal waste (e.g., batteries, CFLs). |
| 611430 | 611TRAINAW Acquisition Workforce Training Ordering Guide - December 2025.pdf [PDF - 161 KB] | This ordering guide assists agencies in procuring Acquisition Workforce Training (FAC-C and DAWIA) via MAS SIN 611TRAINAW, covering training modalities and instructor requirements. |
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Rates for Alaska, Hawaii, and U.S. territories and possessions are set by the Department of Defense.
Rates for foreign countries are set by the Department of State.
Rates are available between 10/1/2023 and 09/30/2026.
The End Date of your trip can not occur before the Start Date.
Traveler reimbursement is based on the location of the work activities and not the accommodations, unless lodging is not available at the work activity, then the agency may authorize the rate where lodging is obtained.
Unless otherwise specified, the per diem locality is defined as "all locations within, or entirely surrounded by, the corporate limits of the key city, including independent entities located within those boundaries."
Per diem localities with county definitions shall include"all locations within, or entirely surrounded by, the corporate limits of the key city as well as the boundaries of the listed counties, including independent entities located within the boundaries of the key city and the listed counties (unless otherwise listed separately)."
When a military installation or Government - related facility(whether or not specifically named) is located partially within more than one city or county boundary, the applicable per diem rate for the entire installation or facility is the higher of the rates which apply to the cities and / or counties, even though part(s) of such activities may be located outside the defined per diem locality.
U.S. General Services Administration