Financial Glossary
Payer's RTN (Routing Transit Number)
A payer's RTN is the routing transit number of the financial institution that paid interest to a recipient, sometimes printed on a Form 1099-INT. The nine-digit number identifies the bank within the U.S. payment system and, when included on the form, may give the recipient telephone or electronic access to interest information. It is an optional informational field rather than a figure that affects the tax calculation itself.
Problem & Application
Business owners and investors who receive interest statements occasionally see a payer's RTN box and wonder whether it matters for their return. It does not change taxable interest, but knowing what the field represents helps avoid confusing it with account numbers or with figures that must be entered on Schedule B. Clean recordkeeping means matching each 1099-INT to the right account regardless of optional fields.
In Short
The payer's RTN is an identifying detail, not a taxable amount, and it simply ties a 1099-INT back to the issuing bank. Recognizing it prevents data-entry mistakes during tax prep.