1.22.2 United States Postal Service (USPS) Classes of Mail, USPS Additional Services and Small Package Carrier (SPC) Services

Manual Transmittal

August 08, 2018


(1) This transmits revised IRM 1.22.2, Mail and Transportation Management, United States Postal Service (USPS) Classes of Mail, USPS Additional Services and Small Package Carrier (SPC) Services.

Material Changes

(1) IRM, added new subsection title; Program, Scope and Objectives, per Internal Controls Requirements and renumbered subsections accordingly

(2) IRM, subsection title, Background and information added per Internal Controls requirements

(3) IRM, References, renumbered per Internal Controls requirements, removed USPS Extra Service Quick Guide 900; added USPS Domestic Mail Manual

(4) IRM, added subsection title; Acronyms

(5) IRM, Destination Treated as Domestic, renumbered IRM, Removed e.g American Samoa, Guam, Puerto Rico and the Virgin Islands)

(6) IRM, International Mail, renumbered, added (6) which was formerly under IRM subsection

(7) IRM, First-Class International Mail, renumbered, (3) removed

(8) IRM, Small Package Carrier (SPC) Services, renumbered, (4) Removed (Diplomatic Post Office)

(9) IRM, Ground Services, renumbered, removed “,such as FedEx and United Parcel Services (UPS),”

(10) IRM, Air Services, renumbered, (3) replaced 2nd and 3rd sentences with “The following services are not authorized due to excessive cost:”; deleted 3rd and 4th bullets

(11) IRM, Designated Private Delivery Service-Background, renumbered, replaced Notice 2015-38, IRB 2015-21 with Notice 2016-30, IRB 2016-18

(12) IRM, Responsibilities, renumbered, added IRS.gov website link

(13) Editorial changes have been made throughout the IRM

Effect on Other Documents

IRM 1.22.2, Classes of Mail and the United States Postal Service (USPS) Special Services, dated October 2015 is superseded.


IRS Employees

Effective Date


LuCinda J. Comegys
Director, Distribution
Wage and Investment Division

Program, Scope, and Objectives

  1. Purpose: This IRM section describes classes of and types of mail and package services used by the IRS. These services apply to the incoming and outgoing mail.

  2. Audience: This information applies to all IRS employees, and those who are responsible for making decisions in either mail or transportation management.

  3. Policy Owner: The responsibility of administering the IRS Mail and Transportation Management program falls under the direction of the Commissioner, Wage and Investment (W&I).

  4. Program Owner: Media and Publications (M&P), Distribution (D), is the program owner for the Mail and Transportation Management program and is responsible for developing policies for the effective use of Servicewide postal and transportation services.


  1. United States Postal Service Classes of Mail, USPS Additional Services and Small Package Carrier (SPC) Services are parts of the Mail and Transportation Management Program that involves the management, control and facilitation of mail usage to meet customers’ needs while minimizing costs. An efficient mail management program directly affects the relationship with taxpayers and the image and reputation associated with the Service.

  2. Mail and Transportation Management program includes the use USPS Small Package Carriers and other mail services.

  3. The manual contains the following information:

    • Classes of Mail and Additional Services

    • Overseas Military and Diplomatic Mail

    • International Mail

    • SPC Services

    • International Packages

    • Designated Private Delivery Service

    • References


  1. Available references are:

    • USPS Domestic Mail Manual

    • USPS Notice 123, Price List

    • USPS Publication 370, Extra Services

    • USPS Postal Bulletin

    • 31 CFR 362, Declaration of Valuables Under the Government Losses in Shipment Act

    • 39 CFR 310, Enforcement of Private Express Statutes

    • Revenue Procedure 97-19

    • Notice 2015-38, IRB 2015-21

    • Memorandum of Understanding between Distribution, Submission Processing and Appeals, dated January 5, 2015


  1. The following acronyms were used throughout the IRM:

    Acronyms Definitions
    APOs Army/Airforce Post Offices
    FPOs Fleet Post Offices
    DPOs Diplomatic Post Offices
    MPOs Military Post Offices
    DMM Domestic Mail Manual
    IMpb Intelligent Mail Package Barcodes
    M&P Media and Publications
    SPC Small Package Carrier
    USPS United States Postal Service
    BRM Business Reply Mail
    PDS Private Delivery Service
    PTP Postal and Transport Policy
    SP Submission Processing
    W&I Wage and Investment

Classes of Mail and Additional Services

  1. The following sections describe the classes and types of mail and package services used by the IRS. These services apply to incoming and outgoing mail.

First-Class Mail

  1. As defined by 39 CFR 310, First-Class Mail includes handwritten and typewritten correspondence, bills and statements of accounts, remittances (checks), post cards and Business Reply Mail (BRM). First-Class Mail is personal and may not be opened for postal inspection. First-Class Mail is for individual pieces weighing 13 ounces or less. It includes forwarding service to a new address for up to 12 months or return service if the piece is not delivered. All envelopes or packages labeled First-Class Mail weighing more than 13 ounces are handled as Priority Mail.

  2. The USPS is the primary carrier for all correspondence between IRS and the public. The following general guidelines should be used to ensure economic handling of First-Class Mail:

    1. Single pieces of correspondence should be mailed in standard letter size envelopes, not in flat size envelopes. The only exception would be photographs or other items that may be damaged by folding. The USPS charges higher rates for large or flat size envelopes.

    2. Several items sent to the same address should be combined into a single large envelope, as allowed by statute.

    3. If damage to the insert will not occur by folding, all inserts should be folded to allow the use of a standard letter size envelope.

Priority Mail

  1. All First-Class Mail weighing more than 13 ounces is designated Priority Mail and given First-Class Mail handling. Rates are based on zone and weight. USPS tracking is included at no extra cost. Priority Mail matter is closed against postal inspection.

  2. Guidelines when using Priority Mail are:

    • All taxpayer correspondence weighing more than 13 ounces must be sent priority mail

    • USPS Priority Mail packaging should be used whenever feasible

    • If not using USPS Priority Mail packaging, the mailer must prominently mark "PRIORITY MAIL" on the address side of the mail piece

  3. Priority Mail Flat Rate can be a cost effective alternative to Priority Mail:

    • Only USPS-produced Flat Rate boxes are eligible for the Flat Rate box prices

    • Each USPS-produced Priority Mail Flat Rate box is charged a flat rate regardless of the actual weight (up to 70 pounds) or domestic destination

    • Various USPS-produced Flat Rate boxes are available with different predetermined prices

    • Flat Rate boxes ordered from USPS are free of charge

Standard Mail

  1. Standard Mail consists of items that are not required to be mailed as First-Class Mail. It is non-personal and each piece must weigh less than 16 ounces. Examples of Standard Mail are:

    • Tax Products

    • Printed matter, flyers, circulars, advertising

    • Newsletters, bulletins and catalogs

    • Small parcels

  2. This class of mail is not appropriate for mailing an individual piece of mail. Each mailing must meet a minimum quantity of 200 pieces or 50 pounds of mail. There is no single-piece Standard Mail Postage. Refer to the Domestic Mail Manual (DMM) for detailed requirements.

  3. Forwarding and return must be endorsed on each piece. The IRS pays for the forwarding and return of properly endorsed Standard Mail pieces using a weighted factor as directed by the DMM.

Parcel Select

  1. Parcel Select consists of mailable matter not required to be mailed as First-Class Mail.

  2. This class of mail reduces postage costs by allowing the mailer to enter bulk shipments of packages into the USPS delivery network. Each mailing must meet a 50-piece minimum. Size and weight limitations are available in the DMM.

  3. All Parcel Select mail pieces must bear an intelligent mail package barcodes (IMpb) or be assessed a noncompliance fee.

Priority Mail Express

  1. Priority Mail Express should be restricted to unique circumstances where the next day delivery of a mail piece is mandatory and failure to deliver the piece will have detrimental effect on conducting business. Priority Mail Express is guaranteed expedited service that offers tracking.

  2. The use of this service is restricted to mail addressed to:

    • A USPS facility

    • A USPS Post Office (P.O.) Box

    • When an USPS postmark is required by law as proof of mailing

  3. Form 9814, Request for Mail/Shipping Service, is required for all IRS locations where designated mailroom personnel are creating shipping labels or placing postage on packages.

Extra/Other Services

  1. Extra Services are value-added products that provide greater security and accountability for mail, or improved handling. These services are available for a fee in addition to regular postage and are not available for all classes of mail. Certified Mail, Certificate of Mailing, Delivery Confirmation, Registered Mail, Restricted Delivery and Return Receipt are examples of Extra Services that should be used in unique situations or where required by the statute. See the DMM for limitations. Other services include Penalty Business Reply Mail.

    1. Certified Mail provides a record of mailing to the sender and a record of delivery at the Post Office of delivery for two years. Mail pieces requiring a postmarked sender's receipt must be mailed at a USPS office. Certified Mail does not travel any faster than First-Class Mail and does not receive any extra security protection.

    2. Certificate of Mailing provides evidence that mail has been presented to the USPS for mailing but does not provide a record of delivery. This method is preferred over use of Registered or Certified Mail services when these service types are not mandated by statute.

    3. Delivery Confirmation provides information about date and time when an article is delivered or delivery was attempted but unsuccessful.

    4. Registered Mail provides sender with mailing receipt at point of mailing and a delivery record is maintained at the mailing Post Office. It is the most secure service offered by the USPS, tracked from the time of mailing to time of delivery, transported under lock separately from other mail and may not be deposited in collection boxes.

    5. Restricted Delivery provides mail to a specific addressee or the addressee's authorized agent as instructed by the mailer.

    6. Return Receipt provides sender with proof of delivery (to whom the mail was delivered and date of delivery).

    7. Penalty BRM service uses a postage paid return envelope, label or postcard.

Recipient Services

  1. P.O. Box and Caller Service are premium services offered for a fee and are not funded through the Official Mail Accounting System. Offices requiring this service should contact their servicing Facilities Management Territory Point of Contact for assistance.

  2. Payment for P.O. Box service is required in 6 month (semi-annual) or 12 month (annual) increments. P.O. Boxes are available in various sizes and are assigned by a postal facility based on individual needs.

  3. Utilization of P.O. Boxes should be reviewed annually by local offices for number of boxes required and their purpose.

  4. Caller Service is available if incoming mail exceeds the capacity of the largest available P.O. Box. This service allows a customer to pick up mail at a Post Office call window or loading dock.

Overseas Military and Diplomatic Mail

  1. Mail addressed to military post offices (MPOs) and diplomatic post offices (DPOs) overseas, is subject to certain conditions or restrictions regarding content, preparation and handling. MPOs are operated by the Army, Navy, Air Force or the Marine Corps to serve military personnel overseas or aboard ships.

    1. Army/Air Force Post Office (APO) serves the Army or Air Force personnel

    2. Fleet Post Office (FPO) serves the Coast Guard, Navy or Marine Corps personnel

  2. DPOs are established by the Department of State and serve overseas personnel at the U.S. Embassies and Consulates.

Destination Treated as Domestic

  1. USPS mail sent within and between the United States, its territories and possessions (e.g., American Samoa Guam, Puerto Rico, and the Virgin Islands), an APO/FPO/DPO, and the United Nations, NY is treated as domestic mail.

  2. In addition, mail sent to or from Freely Associates States (e.g., Marshall Island and Micronesia) is treated as domestic mail when the mail:

    • Originates from Freely Associated States for delivery within and between the Freely Associated States and the U.S., its territories and possessions, APOs/FPOs/DPOs, and the United Nations, NY

    • Originates from the U.S., its territories and possessions, an APO/FPO/DPO or the United Nations, NY for delivery to the Freely Associated States

  3. Certain conditions and restrictions apply when mailing overseas to Military/Diplomatic Mail and to the Freely Associated States. These conditions and restrictions are outlined in the USPS Postal Bulletin and are available at: . Overseas Military/Diplomatic Mail conditions and restrictions are listed by APO/FPO/DPO ZIP codes through the use of footnoted mailing restriction codes. USPS Postal Bulletin is updated bi-weekly.

Extra Services

  1. Extra services commonly used for IRS mail are available for many APO/FPO/DPO destinations and ZIP codes in U.S. territories, possessions or Freely Associated States.

  2. Extra or additional services may be added at the time of mailing if the standards for the services are met and the applicable fees are paid.

  3. Information about extra services is available in the DMM and the USPS Postal Bulletin at:

International Mail

  1. International Mail is mail addressed to or received from foreign countries and excludes mail originating in the United States of America, its territories and possessions.

  2. When mailing to foreign countries, the destination and size of envelope should be considered. Postage rates are based on the level of service, zone and weight of the mail piece.

  3. Dependent upon the destination country and its rules and regulations, extra services may be available, but should only be used in unique situations or where required by statute.

  4. Registered Mail is the replacement service to USPS Certified Mail.

  5. Return Receipts are completed in the destination country which may not require the addressee's signature. Receipts are returned by airmail.

  6. USPS International Mail Manual (IMM) contains detailed information related to services, conditions of mailing, extra services and mail preparation, including U.S Customs requirements.

First-Class International Mail

  1. First-Class International Mail meets the criterion outlined for First-Class Mail in IRM, First-Class Mail. It is the most economical method to send letters and large envelopes using USPS.

  2. Undeliverable mail will be returned in accordance with the regulations of the destination country.

Small Package Carrier (SPC) Services

  1. The following sections describe the SPC services in use by the IRS.

  2. Packages not containing remittances and weighing 13 ounces or less will be sent via the USPS.

  3. All packages tendered to a SPC are assigned a tracking number. This tracking number will be used to ensure delivery.

  4. A SPC cannot be used for packages being sent to a USPS Post Office, USPS P.O. Box, APO, FPO or DPO address. These packages must be sent via the USPS.

  5. SPC time in transit and actual delivery days are Monday through Friday.

  6. The SPC does not include forwarding services to a new address. When a package is not deliverable or refused by the occupant, a SPC will attempt to locate a new address through publicly available address services. If the attempt is unsuccessful, the package is returned to the sender.

  7. In consideration of the health and safety of all employees, each SPC package should not exceed 30 pounds. Additional handling charges will apply for packages weighing more than 90 pounds. Packages weighing 70 - 150 pounds must be tagged with a SPC Heavy Weight label. Packages weighing over 150 pounds are classified as freight and may not be sent by SPC. Refer to IRM 1.22.6, Transportation Management, for information on freight services.

Ground Services

  1. SPCs provide one to six day delivery based upon distance. Packages can include documents and case files that are contained in either a corrugated cardboard box or 9 x 12 and larger envelope. SPC ground services are date delivery guaranteed that offer tracking.

  2. SPC Ground Services are generally the most economical and preferred shipping option for packages weighing more than 13 ounces. Cost for ground package services is dependent on zone and weight.

  3. Form 9814, Request for Mail/Shipping Service, is required for all ground shipments at locations serviced by a Campus mailroom or IRS contract mailroom.

Air Services

  1. SPC Air Services should be restricted to unique circumstances where next day delivery of a package is mandatory and failure to deliver the package will have a detrimental effect on conducting business. SPC Air Services are guaranteed expedited services that offer tracking.

  2. The following SPC Air Services are authorized for use:

    1. 2nd Business Day Delivery Service - Guaranteed delivery by close of business on 2nd business day

    2. Next Business Day Delivery Service - Guaranteed delivery by 10:30 AM (most areas)

  3. There are many other air delivery options offered by SPCs. The following services are not authorized due to excessive cost:

    • FedEx First Overnight

    • UPS Next Day Early AM

    • Any Same Day Delivery Service

  4. Form 9814, Request for Mail/Shipping Service, is required for all air shipments at locations serviced by a Campus mailroom or IRS contract mailroom.

Extra Services

  1. Extra services, also known as accessorial fees, are value-added options offered by SPCs that can be combined with the ground and air shipment for an additional fee. Declared Value, Delivery Confirmation, Saturday Delivery, and Residential Delivery are examples of accessorial services.

    1. Declared Value, known as insurance, is not to be used unless specified by the Postal and Transport Policy (PTP) Section. A SPC's liability for loss or damage to a shipment is $100 without declaration of value. Shipments exceeding $100 in value are considered self-insured.

    2. Delivery Confirmation is only offered in combination with "Signature Required" or "Adult Signature Required." These services do not meet statutory requirements for signature receipt related to tax assessment or collection of tax liabilities.

    3. Saturday Delivery is high cost and can only be used in extreme circumstances.

    4. Residential Delivery is defined as a delivery to a location that does not have an entrance open to the public. Residential charges on ground shipments are significantly less expensive than residential charges on air shipments.

International Packages

  1. International packages are addressed to foreign countries. Next Day delivery is not available to most international destinations. Standard international delivery times begin at two days but vary according to destination, country, and carrier.

  2. Ground services are available from the Continental U.S. to Alaska, Hawaii and Puerto Rico. Any other countries are considered international.

  3. Rates are based on level of service, zone and weight of the mail piece. SPC international shipping should only be utilized in unique circumstances.

Designated Private Delivery Service - Background

  1. In June 2014, the Distribution organization assumed responsibility for completing the initial and administrative reviews of private delivery service (PDS) applications and for establishing a new application address.

  2. Returns, payments and certain tax court documents are considered timely mailed when using the USPS or certain designated PDS.

  3. For a PDS to be deemed ‘designated’, the company must submit an application to IRS and receive approval. There is one annual application period for a PDS to apply for designation, which ends on June 30, of the year preceding that filing season. A list of designated PDS companies is updated as a PDS is added or removed from the list.

  4. The current list of designated PDS companies is published in Notice 2016-30, IRB 2016-18, for purposes of the timely mailing treated as timely filing/paying rule of section 7502 of the Internal Revenue Code.


  1. Media and Publications (M&P)/Distribution (D), is the steward of the designated PDS application process. Distribution Requirements Branch (DRB)/PTP) section manages the application process. The PTP section office address in Dallas, TX serves as the filing address for PDS applications and related correspondence.

  2. PTP responsibilities include:

    • Review of initial applications in accordance with the criteria found in Revenue Procedure 97-19

    • Notify the Appeals point of contact (POC) of any new applications and include them in all discussions with Chief Counsel, during the review process

    • Document the initial review using a criteria checklist and include any comments or guidance provided by the Chief Counsel

    • Make recommendation to approve or deny the application for PDS mail service

    • If the recommendation is to approve the application, prepare and submit a memo to Chief Counsel for review and concurrence

    • If the recommendation is to deny the application, prepare a denied letter to the PDS and submit to Chief Counsel for review and concurrence

    • Conduct all administrative reviews, prepare a response and provide to Chief Counsel for review and concurrence

    • Establish a historical file containing all documentation for future reference

    • Notify Tax Forms and Publications (TF&P) of any changes in PDS designations by October 15

    • Notify Submission Processing (SP) of any changes to the current list of designated PDSs

  3. Submission Processing makes the necessary updates on IRS.gov at href=https://www.irs.gov regarding designated PDSs upon written notification from PTP. SP also updates applicable internal revenue manuals (IRMs).

  4. Appeals roles and responsibilities include:

    • Review all supporting documentation submitted by the PDS

    • Make determination of whether or not the PDS application meets the criteria as stated in Revenue Procedure 97-19

    • Prepare a memo and submit to Chief Counsel if recommendation is to approve the application

    • Prepare a denial letter and mail to the applicant (PDS) if recommendation is to deny the application, and send a copy to Chief Counsel

    • Notify PTP point of contact of any changes in PDS designation

    • Establish a historical file containing all documentation for future reference

    • Send copies to PTP point of contact and Chief Counsel