SF30

Amendment of Solicitation/Modification of Contract

Agency
GSA
Revision
Rev. 11/2016
Fillable fields
48
Pages
2
Official source
GSA form page
Checked
October 20, 2026
Fill SF30 online
Page 1 of form SF30

Standard Form 30 (SF 30): Amendment of Solicitation/Modification of Contract

Standard Form 30 (SF 30), Amendment of Solicitation/Modification of Contract, is the form an issuing office uses to amend a solicitation or to modify a contract or order. The form says it is prescribed by GSA under FAR (48 CFR) 53.243. This copy is Rev. 11/2016, and the form says the previous edition is unusable. GSA hosts it in its forms library.

Item 11 applies only to amendments of solicitations and Item 13 applies only to modifications of contracts and orders. Item 14 describes the change, organized by Uniform Contract Format (UCF) section headings. The contractor or offeror signs in Items 15A to 15C when required, and the contracting officer signs in Items 16A to 16C. The back page has instructions for the items that are not self-explanatory.

You can fill it out free in your browser on this page and download the result without an account.

Top of page 1 of Standard Form 30 (SF 30): Amendment of Solicitation/Modification of Contract, as printed by GSA

What's on SF 30

Items 1 to 5: identifiers

Contract ID code, page count, amendment or modification number, effective date, requisition or purchase requisition number, and project number if applicable.

Items 6 to 10: offices, contractor and documents

Issuing and administering offices, the contractor's name, address, code and facility code, and the number and date of the solicitation (9A, 9B) or the contract or order (10A, 10B).

Item 11: solicitation amendments

Whether the hour and date for receipt of offers is extended, and the ways offers acknowledge receipt of the amendment.

Item 12: accounting and appropriation data

If required, the effect on each affected accounting classification, shown as a net increase or net decrease.

Item 13: type of modification

A change order, administrative changes under FAR 43.103(b), a supplemental agreement, or another type of modification, each with its authority, plus whether the contractor signs.

Items 14 to 16: description and signatures

The description of the amendment or modification, then the contractor or offeror signature and the contracting officer signature, each with name, title and date.

How to complete SF 30

  1. 1

    Enter the contract ID code

    For Item 1, the instructions say to insert the contract type identification code that appears in the title block of the contract being modified.

  2. 2

    Set the effective date

    Item 3 is the issue date for an amendment, change order or administrative change, and the date the parties agreed to for a supplemental agreement. The instructions add rules for termination notices.

  3. 3

    Reference the original document

    In Items 9 and 10, check the box and insert the number and date of the original solicitation, contract or order. Item 8 shows the contractor as in the original contract unless changed.

  4. 4

    Choose the modification type

    In Item 13, check the type, insert the authority under which it is issued, and mark whether the contractor signs. The instructions point to FAR 43.103.

  5. 5

    Describe the change and its price impact

    Organize Item 14 under UCF section headings, state the reason, and show whether the total contract price increased, decreased or is unchanged.

  6. 6

    Sign and return copies

    The contractor signs Items 15A to 15C when Item 13E requires it and returns the stated number of copies to the issuing office. The contracting officer signs Items 16A to 16C.

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Where it goes and what the form says

Who it goes to

The PDF gives no filing address. The issuing office named in Item 6 issues it, and when Item 13E requires a signature, the contractor returns copies to the issuing office.

Acknowledging an amendment

Item 11 lists three methods: completing Items 8 and 15 and returning copies, acknowledging receipt on each copy of the offer, or a separate letter or electronic communication. The form says late acknowledgment may result in rejection of the offer.

Changing an offer already submitted

The form says a change may be made by letter or electronic communication that references the solicitation and the amendment and is received before the opening hour and date specified.

Terms not changed

The form says that, except as provided in it, all terms and conditions of the document in Item 9A or 10A, as changed before, remain unchanged and in full force and effect.

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Who fills out SF 30?

  • The issuing office

    Item 6 holds the name, address and code of the issuing office, and Item 7 the administering office if it is different.

  • The contracting officer

    Signs Items 16A to 16C for the United States of America. The form says this signature is not required on solicitation amendments and is normally affixed last on supplemental agreements.

  • The contractor

    Item 13E shows whether the contractor is or is not required to sign the document and return copies to the issuing office. The contractor's signer gives a name and title in Item 15A.

  • Offerors on a solicitation

    Item 11 says offers must acknowledge receipt of an amendment before the hour and date specified in the solicitation, by one of three methods the form lists.

The issuing office prepares the form. Item 13E says whether the contractor signs it.

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Questions about Form SF30

Who issues SF 30?

The form says it is prescribed by GSA under FAR (48 CFR) 53.243. This copy is Rev. 11/2016, and the form says the previous edition is unusable.

Is SF 30 for solicitations or contracts?

Both. Item 11 applies only to amendments of solicitations, and Item 13 applies only to modifications of contracts and orders.

Does the contractor sign SF 30?

It depends on Item 13E, where the issuing office marks whether the contractor is or is not required to sign the document and return copies to the issuing office. The instructions refer to FAR 43.103.

How is a solicitation amendment acknowledged?

Item 11 lists three ways: completing Items 8 and 15 and returning copies of the amendment, acknowledging receipt on each copy of the offer, or a separate letter or electronic communication that references the solicitation and amendment numbers.

Does the contracting officer sign a solicitation amendment?

The instructions say the contracting officer's signature is not required on solicitation amendments, and is normally affixed last on supplemental agreements.

What if accounting changes do not fit in Item 12?

The instructions say to insert an asterisk and the words "See continuation sheet" when changes to multiple accounting classifications cannot be placed in block 12.