UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington D.C. 20549

FORM 10-D

ASSET BACKED ISSUER
DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

For the monthly distribution period from: May 18, 2023 to June 16, 2023

Commission File Number of issuing entity: 333-172366-10

Central Index Key Number of issuing entity: 0001589802

WFRBS Commercial Mortgage Trust 2013-UBS1
(Exact name of issuing entity as specified in its charter)

Commission File Number of depositor: 333-172366

Central Index Key Number of depositor: 0000850779

Wells Fargo Commercial Mortgage Securities, Inc.
(Exact name of depositor as specified in its charter)

Central Index Key Number of sponsor (if applicable): 0000740906

Wells Fargo Bank, National Association
(Exact name of sponsor as specified in its charter)

Central Index Key Number of sponsor (if applicable): 0001541886

UBS Real Estate Securities Inc.
(Exact name of sponsor as specified in its charter)

Central Index Key Number of sponsor (if applicable): 0000729153

NatWest Markets Plc (formerly known as The Royal Bank of Scotland plc)
(Exact name of sponsor as specified in its charter)

Central Index Key Number of sponsor (if applicable): 0001592182

LMF Commercial, LLC (formerly known as Rialto Mortgage Finance, LLC)
(Exact name of sponsor as specified in its charter)

Anthony J. Sfarra (212) 214-5600
(Name and telephone number, including area code, of the person to contact in connection with this filing)

New York
(State or other jurisdiction of incorporation or organization of the issuing entity)

38-3918790
38-3918791
38-3918792
(I.R.S. Employer Identification No.)

c/o Computershare Trust Company, N.A., as agent for
Wells Fargo Bank, National Association
9062 Old Annapolis Road
Columbia, MD 21045
(Address of principal executive offices of the issuing entity) (Zip Code)

(667) 786-1992
(Telephone number, including area code)

Not Applicable
(Former name, former address, if changed since last report)

Registered/reporting pursuant to (check one)

Title of Class	Section 12(b)	Section 12(g)	Section 15(d)	Name of Exchange (If Section 12(b))
A-1			X
A-2			X
A-3			X
A-4			X
A-SB			X
A-S			X
X-A			X
B			X
C			X

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes X No

Part I - DISTRIBUTION INFORMATION

Item 1. Distribution and Pool Performance Information.

On June 16, 2023 a distribution was made to holders of the certificates issued by WFRBS Commercial Mortgage Trust 2013-UBS1.

The distribution report is attached as an Exhibit to this Form 10-D, please see Item 10(b), Exhibit 99.1 for the related information.

The following table presents the loss information for the trust assets for the WFRBS Commercial Mortgage Trust 2013-UBS1 in accordance with Item 1100(b) as required by Item 1121(a)(9) of Regulation AB:

Loss Information as reported on June 16, 2023

Number of Delinquencies 30+ days	% of Delinquencies 30+ days by Pool Balance	Number of Loans/REOs with Losses	Average Net Loss
0	N/A	2	$645,694.60

No assets securitized by Wells Fargo Commercial Mortgage Securities, Inc. (the "Depositor") and held by WFRBS Commercial Mortgage Trust 2013-UBS1 were the subject of a demand to repurchase or replace for breach of the representations and warranties contained in the underlying transaction documents during the monthly distribution period from May 18, 2023 to June 16, 2023.

The Depositor filed its most recent Form ABS-15G in accordance with Rule 15Ga-1 under the Securities Exchange Act of 1934 (a "Rule 15Ga-1 Form ABS-15G") on May 11, 2023. The CIK number for the Depositor is 0000850779.

Wells Fargo Bank, National Association ("Wells Fargo"), one of the sponsors, most recently filed a Rule 15Ga-1 Form ABS-15G on May 11, 2023. The Central Index Key number for Wells Fargo is 0000740906.

UBS Real Estate Securities Inc. ("UBS"), one of the sponsors, most recently filed a Rule 15Ga-1 Form ABS-15G on May 9, 2023. The Central Index Key number for UBS is 0001541886.

NatWest Markets Plc (formerly known as The Royal Bank of Scotland plc) ("NatWest plc"), one of the sponsors, most recently filed a Rule 15Ga-1 Form ABS-15G on May 16, 2017. The Central Index Key number for NatWest plc is 0000729153.

LMF Commercial, LLC (formerly known as Rialto Mortgage Finance, LLC) ("LMF"), one of the sponsors, most recently filed a Rule 15Ga-1 Form ABS-15G on February 14, 2023. The Central Index Key number for LMF is 0001592182.

Part II - OTHER INFORMATION

Item 2. Legal Proceedings.

Disclosure from Deutsche Bank Trust Company Americas, as trustee:

Deutsche Bank Trust Company Americas (“DBTCA”) and Deutsche Bank National Trust Company (“DBNTC”) have been sued by investors in civil litigation concerning their role as trustees of certain residential mortgage-backed securities (“RMBS”) trusts.

On June 18, 2014, a group of investors, including funds managed by Blackrock Advisors, LLC, PIMCO-Advisors, L.P., and others, filed an action against DBNTC and DBTCA in New York State Supreme Court alleging that DBNTC and DBTCA failed to perform purported duties, as trustees for 544 private-label RMBS trusts, to enforce breaches of representations and warranties as to mortgage loans held by the trusts and to enforce breaches by servicers of their mortgage loan servicing obligations for the trusts. During the course of the litigation, plaintiffs dismissed the case from New York State Supreme Court and refiled two separate cases, one in the U.S. District Court for the Southern District of New York (the “BlackRock SDNY Case”) and the other in the Superior Court of California, Orange County (the “BlackRock California Case”). Pursuant to a settlement among the parties, the BlackRock SDNY Case was dismissed on December 6, 2018, and the BlackRock California Case was dismissed on January 11, 2019.

On September 27, 2017, DBTCA was added as a defendant to a case brought by certain special purpose entities including Phoenix Light SF Limited in the U.S. District Court for the Southern District of New York, in which the plaintiffs previously alleged incorrectly that DBNTC served as trustee for all 43 of the trusts at issue. On September 27, 2017, plaintiffs filed a third amended complaint that names DBTCA as a defendant in addition to DBNTC. DBTCA serves as trustee for one of the 43 trusts at issue. DBNTC serves as trustee for the other 42 trusts at issue. Plaintiffs’ third amended complaint brings claims for violation of the U.S. Trust Indenture Act of 1939 (“TIA”); breach of contract; breach of fiduciary duty; negligence and gross negligence; violation of the New York Streit Act (“Streit Act”); and breach of the covenant of good faith. However, in the third amended complaint, plaintiffs acknowledge that, before DBTCA was added to the case, the court dismissed plaintiffs’ TIA claims, negligence and gross negligence claims, Streit Act claims, claims for breach of the covenant of good faith, and certain theories of plaintiffs’ breach of contract claims, and plaintiffs only include these claims to preserve any rights on appeal. Plaintiffs allege damages of “hundreds of millions of dollars.” On November 13, 2017, DBNTC and DBTCA filed an answer to the third amended complaint. On December 7, 2018, DBNTC and DBTCA filed a motion for summary judgment. Also on December 7, 2018, plaintiffs, jointly with Commerzbank AG (see description of Commerzbank case below), filed a motion for partial summary judgment. On October 27, 2021, DBNTC and DBTCA filed a supplemental motion for summary judgment relating to plaintiffs’ standing. On February 8, 2022, the court issued an order in which it granted DBNTC and DBTCA’s supplemental motion for summary judgment, granted in part DBNTC and DBTCA’s initial motion for summary judgment, and denied plaintiffs’ motion for partial summary judgment. As a result of that order, all of plaintiffs’ claims were dismissed with prejudice. On April 26, 2023, the United States Court of Appeals for the Second Circuit affirmed the court’s summary judgment order.

On November 30, 2017, DBTCA was added as a defendant to a case brought by Commerzbank AG (“Commerzbank”) in the U.S. District Court for the Southern District of New York, in which Commerzbank previously alleged incorrectly that DBNTC served as trustee for all 50 of the trusts at issue. On November 30, 2017, Commerzbank filed a second amended complaint that names DBTCA as a defendant in addition to DBNTC. DBTCA serves as trustee for 1 of the 50 trusts at issue. DBNTC serves as trustee for the other 49 trusts at issue. Commerzbank’s second amended complaint brings claims for violation of the TIA; breach of contract; breach of fiduciary duty; negligence; violation of the Streit Act; and breach of the covenant of good faith. However, in the second amended complaint, Commerzbank acknowledges that, before DBTCA was added to the case, the court dismissed Commerzbank’s TIA claims for the trusts governed by pooling and servicing agreements, as well as its Streit Act claims and claims for breach of the covenant of good faith, and Commerzbank only includes these claims to preserve any rights on appeal. The second amended complaint alleges that DBNTC and DBTCA caused Commerzbank to suffer “hundreds of millions of dollars in losses,” but the complaint does not include a demand for money damages in a sum certain. On January 29, 2018, DBNTC and DBTCA filed an answer to the second amended complaint. On December 7, 2018, DBNTC and DBTCA filed a motion for summary judgment. Also on December 7, 2018, Commerzbank, jointly with the Phoenix Light plaintiffs, filed a motion for partial summary judgment. On February 8, 2022, the court issued an order in which it granted in part DBNTC and DBTCA’s motion for summary judgment and denied plaintiffs’ motion for partial summary judgment. As a result of that order, many of plaintiffs’ claims and theories were dismissed with prejudice. Discovery is ongoing.

On December 30, 2015, IKB International, S.A. in Liquidation and IKB Deutsche Industriebank A.G. (collectively, “IKB”), as an investor in 37 RMBS trusts, filed a summons with notice in the Supreme Court of the State of New York, New York County, against DBNTC and DBTCA as trustees of the trusts. On May 27, 2016, IKB served its complaint asserting claims for breach of contract, breach of fiduciary duty, breach of duty to avoid conflicts of interest, violation of the Streit Act, violation of the TIA, violation of Regulation AB, and violation of Section 9 of the Uniform Commercial Code. IKB alleges that DBNTC and DBTCA are liable for over U.S. $268 million in damages. On October 5, 2016, DBNTC and DBTCA, together with several other trustees defending lawsuits by IKB, filed a joint motion to dismiss. On January 6, 2017, IKB filed a notice of discontinuance, voluntarily dismissing with prejudice all claims as to three trusts. On June 20, 2017, the parties filed a stipulation, voluntarily dismissing with prejudice all claims as to four additional trusts. On January 27, 2021, the court granted in part and denied in part DBNTC and DBTCA’s motion to dismiss. The court granted the motion to dismiss with respect to IKB’s claims for violations of the Streit Act, Regulation AB, and Section 9 of the Uniform Commercial Code, as well as certain aspects of IKB’s claims for breach of contract, breach of fiduciary duty, and violation of the TIA. The court denied the remainder of the motion to dismiss. IKB’s remaining claims for breach of contract, breach of fiduciary duty, breach of duty to avoid conflicts of interest, and violation of the TIA will proceed. On May 10, 2021, DBNTC and DBTCA filed a notice of appeal with the New York Supreme Court Appellate Division, First Department, regarding certain aspects of the court’s order on the motion to dismiss. On May 20, 2021, IKB filed a notice of cross appeal with respect to other aspects of that order. On August 30, 2022, the New York Supreme Court, Appellate Division, First Department affirmed in part and reversed in part the court’s order on the motion to dismiss. On September 30, 2022, IKB filed a motion for reargument or for leave to appeal to the Court of Appeals as to certain aspects of the First Department’s decision. On September 30, 2022, DBNTC and DBTCA filed a motion for leave to appeal to the Court of Appeals as to other aspects of that decision. The First Department granted DBNTC and DBTCA’s motion and denied IKB’s motion. On June 2, 2021, IKB filed a motion for re-argument regarding certain aspects of the court’s order on the motion to dismiss, which the court denied on August 3, 2021. On May 13, 2021, DBNTC and DBTCA filed an answer to the complaint. On October 28, 2021, the parties filed a stipulation, voluntarily dismissing with prejudice all claims as to seven additional trusts. On December 29, 2021, the parties filed a stipulation, voluntarily dismissing with prejudice all claims as to one additional trust. On April 22, 2022, the parties filed a stipulation, voluntarily dismissing with prejudice all claims as to 17 certificates at issue, including all claims as to 5 trusts. On February 28, 2023, the parties filed a stipulation, voluntarily dismissing with prejudice all claims as to two trusts, leaving 15 trusts at issue. Discovery is ongoing.

It is DBTCA’s belief that it has no pending legal proceedings (including, based on DBTCA’s present evaluation, the litigation disclosed in the foregoing paragraphs) that would materially affect its ability to perform its duties under the Pooling and Servicing Agreement for this transaction.

Item 6. Significant Obligors of Pool Assets.

The Outlet Collection | Jersey Gardens mortgage loan constitutes a significant obligor within the meaning of Item 1101(k)(2) of Regulation AB as disclosed in the Prospectus Supplement filed with the SEC on December 10, 2013. The Outlet Collection | Jersey Gardens mortgage loan was paid in full as of November 16, 2020, and is no longer an asset of the trust.

The Sullivan Center mortgage loan, which constituted a significant obligor within the meaning of Item 1101(k)(2) of Regulation AB as disclosed in the Prospectus Supplement filed with the SEC on December 10, 2013, was defeased as of April 27, 2016. The Sullivan Center mortgage loan was paid in full as of August 3, 2018, and is no longer an asset of the trust.

Item 7. Change in Sponsor Interest in the Securities.

None

Item 9. Other Information.

Computershare Trust Company, N.A., as agent for Wells Fargo Bank, N.A., in its capacity as Certificate Administrator for WFRBS Commercial Mortgage Trust 2013-UBS1, affirms the following amounts in the respective accounts:

Distribution Account Balance
Prior Distribution Date	05/17/2023	$1,754.06
Current Distribution Date	06/16/2023	$1,782.72

Interest Reserve Account Balance
Prior Distribution Date	05/17/2023	$0.00
Current Distribution Date	06/16/2023	$0.00

Item 10. Exhibits.

(a) The following is a list of documents filed as part of this Report on Form 10-D:

(99.1) Monthly report distributed to holders of the certificates issued by WFRBS Commercial Mortgage Trust 2013-UBS1, relating to the June 16, 2023 distribution.

(b) The exhibits required to be filed by the Registrant pursuant to this Form are listed above.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Wells Fargo Commercial Mortgage Securities, Inc.
(Depositor)

/s/ Anthony Sfarra
Anthony Sfarra, President

Date: June 29, 2023

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549

FORM 10-D

ASSET BACKED ISSUER DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Registered/reporting pursuant to (check one)

Loss Information as reported on June 16, 2023

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington D.C. 20549

ASSET BACKED ISSUER
DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934

WFRBS Commercial Mortgage Trust 2013-UBS1 10-D