Contents Part I Part II Part III Additional information Financial Statements

Exhibit 15.1

Consent of Independent Registered Public Accounting Firm

The Supervisory Board

ING Groep N.V.

We consent to the incorporation by reference in the registration statements (Nos. 333-92220, 333-81564, 333-108833, 333-125075, 333-137354, 333-149631, 333-158154, 333-158155, 333-165591, 333-168020, 333-172919, 333-172920, 333-172921 and 333-215535) on Form S-8 and in the registration statement (No. 333-266516) on Form F-3 of our reports dated March 4, 2024 with respect to the consolidated financial statements of ING Groep N.V. and the effectiveness of internal control over financial reporting as of December 31, 2023.

/s/ KPMG Accountants N.V.

Amstelveen, The Netherlands

March 8, 2024

ING Group Annual Report 2023 on Form 20-F    1