FREE WRITING PROSPECTUS

FILED PURSUANT TO RULE 433

REGISTRATION FILE NO.: 333-227081-06

From: Cs Sp Syndicate (CREDIT SUISSE SECURI) At: 03/23/21 09:40:17

Subject: ** LAUNCH ** CSAIL 2021-C20 ** PUBLIC CMBS **

** LAUNCH ** CSAIL 2021-C20 ** PUBLIC CMBS **

JOINT BOOKRUNNERS : Credit Suisse, Deutsche Bank, UBS

CO-MANAGER : Academy Securities

CLS	RatingsF/K/M	Size($MM)	WAL	P.WIN	C/E%	BNCH SPRD
A-1	AAAsf/AAA(sf)/Aaa(sf)	8.088	3.42	1 - 60	30.000	IntS + 30
A-2*	AAAsf/AAA(sf)/Aaa(sf)	177.000	8.78	100 - 108	30.000	IntS + 81
A-3*	AAAsf/AAA(sf)/Aaa(sf)	246.324	9.60	108 - 120	30.000	IntS + 83
A-SB	AAAsf/AAA(sf)/Aaa(sf)	13.731	6.71	60 - 100	30.000	IntS + 68
A-S	AAAsf/AAA(sf)/Aa3(sf)	58.027	9.96	120 - 120	20.875	IntS + 108
B	AA-sf/AA-(sf)/NR	27.821	9.96	120 - 120	16.500	IntS + 130
C	A-sf/A-(sf)/NR	26.231	9.96	120 - 120	12.375	IntS + 195

* Sizes, WALs and principal windows are subject to change as detailed in the attached Term Sheet.

* Expected Settle :	3/30/21	* Format :	SEC-Registered
* First Pay Date :	4/16/21	* Min Denoms :	$10k by $1
* Expected Ratings :	F/K/M	* ERISA :	Yes
* Ticker :	CSAIL 2021-C20	* Timing :	Pricing ~11:00AM ET

COLLATERAL CHARACTERISTICS:

* 29 loans, 40 properties
* WA Mortgage Int. Rate:	3.7674%
* WA Cut-Off LTV:	57.5%
* WA UW NCF DSCR:	2.51x
* WA UW NOI Debt Yield:	10.4%
* WA Rem Term to Maturity:	114
* Ten Largest Loans:	60.0%
* Loan Sellers:	3650 REIT (61.4%), Column (15.4%), UBS AG (12.8%), GACC (10.4%)
* Top 3 States:	NY (19.5%), FL (16.8%), CA (12.8%)
* Top 3 Property Types:	MF (26.0%), RT (24.3%), OF (23.3%)

Vendor Deal Password

Bloomberg CSAIL 2021-C20 21CSAIL20

Trepp CSAIL 2021-C20 21CSAIL20

Intex CSI21C20 ti85g5c818j54t42z

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Investors are urged to read the final prospectus relating to these securities because it contains important information regarding the offering that is not included herein. The issuer, the underwriters or any dealer participating in the offering will arrange to send you the final prospectus if you request it by calling toll-free 1-800-221-1037.

The asset-backed securities referred to in these materials, and the asset pool backing them, are subject to modification or revision (including the possibility that one or more classes of securities may be split, combined or eliminated at any time prior to issuance or availability of a final prospectus) and are offered on a "when, as and if issued" basis.

The information contained in these materials may be based on assumptions regarding market conditions and other matters as reflected herein. Credit Suisse Securities (USA) LLC and the other underwriters make no representation regarding the reasonableness of such assumptions or the likelihood that any such assumptions will coincide with actual market conditions or events, and these materials should not be relied upon for such purposes. The underwriters and their respective affiliates, officers, directors, partners and employees, including persons involved in the preparation or issuance of these materials, may, from time to time, have long or short positions in, and buy and sell, the securities mentioned herein or derivatives thereof (including options). Credit Suisse Securities (USA) LLC and the other underwriters may have an investment or commercial banking relationship with the issuer.

Information in these materials is current as of the date appearing on the material only. This free writing prospectus is not required to contain all information that is required to be included in the prospectus. The information in this free writing prospectus is preliminary and subject to change. Information in these materials regarding any securities discussed herein supersedes all prior information regarding such securities. These materials are not to be construed as an offer to sell or the solicitation of any offer to buy any security in any jurisdiction where such an offer or solicitation would be illegal. You should consult your own counsel, accountant and other advisors as to the legal, tax, business, financial and related aspects of a purchase of these securities.

The issuer has filed a registration statement (including a prospectus) with the SEC (registration statement file no. 333-227081) for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling toll-free 1-800-221-1037. The securities may not be suitable for all investors.