# EDGAR Filing Document

**Accession Number:** 0000070502
**File Stem:** 0001654954-23-003173
**Filing Date:** 2023-3
**Character Count:** 2978
**Document Hash:** d1fba183415e6a71d35313857e8eb719
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001654954-23-003173.hdr.sgml**: 20230320

**ACCESSION NUMBER**: 0001654954-23-003173

**CONFORMED SUBMISSION TYPE**: 424B3

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230320

**DATE AS OF CHANGE**: 20230320

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NATIONAL RURAL UTILITIES COOPERATIVE FINANCE CORP /DC/
- **CENTRAL INDEX KEY:** 0000070502
- **STANDARD INDUSTRIAL CLASSIFICATION:** MISCELLANEOUS BUSINESS CREDIT INSTITUTION [6159]
- **IRS NUMBER:** 520891669
- **STATE OF INCORPORATION:** DC
- **FISCAL YEAR END:** 0531

**FILING VALUES:**
- **FORM TYPE:** 424B3
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-249702
- **FILM NUMBER:** 23746233

**BUSINESS ADDRESS:**
- **STREET 1:** 20701 COOPERATIVE WAY
- **CITY:** DULLES
- **STATE:** VA
- **ZIP:** 20166-6691
- **BUSINESS PHONE:** 7034671800

**MAIL ADDRESS:**
- **STREET 1:** 20701 COOPERATIVE WAY
- **CITY:** DULLES
- **STATE:** VA
- **ZIP:** 20166-6691

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<br> **Filed under Rule 424(b)(3), Registration Statement No. 333-249702**

Pricing Supplement No. 566 - Dated Monday, March 20, 2023 (To: Prospectus Dated October 28, 2020 and Prospectus Supplement Dated October 30, 2020

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| | | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| CUSIP Number | Principal Amount | **Selling Price** | **Gross Concession** | **Net Proceeds** | **Coupon Type** | **Coupon Rate** | **Coupon Frequency** | **Maturity Date** | **1<sup>st</sup> Coupon Date** | **1<sup>st</sup> Coupon Amount** | **Survivor's Option** | **Product Ranking** |
| 63743FV60 | []<br>| 100.000% | 1.550% | [] | Fixed | 4.300% | Monthly | 03/15/2031 | 04/15/2023 | $1.79 | Yes | Senior Unsecured Notes |

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**Redemption Information: Callable at 100% on 3/15/2025 and Monthly thereafter with 30 Calendar Days' Notice.**

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|:---|:---|:---|
| <br>National Rural Utilities Cooperative Finance Corp | Offering Date: Monday, March 20, 2023 through Monday, March 27, 2023<br> Trade Date: Monday, March 27, 2023 @12:00 PM ET<br> Settle Date: Thursday, March 30, 2023<br> Minimum Denomination/Increments:$1,000.00/$1,000.00 <br>Initial trades settle flat and clear SDFS: DTC Book Entry only <br> DTC Number: 0235 via RBC Dain Rauscher Inc.<br>Agents: InspereX LLC, Citigroup, Wells Fargo Advisors, RBC Capital Markets<br>Trustee: U.S. Bank National Association<br>If the maturity date or an interest payment date for any note is not a business<br> day (as term is defined in prospectus), principal, premium, if any, and interest<br> for that note is paid on the next business day, and no interest will accrue from,<br> and after, the maturity date or interest payment date.<br>**InterNotes® is a registered trademark of InspereX Holdings LLC. All Rights Reserved.** | National Rural Utilities Cooperative Finance Corp <br>Prospectus dated October 28, 2020 and <br>Prospectus Supplement Dated: October 30, 2020 <br>|

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