CA1889 - HM Revenue & Customs - hmrc gov 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by filling out Column 4, entering the Rate of Revaluation if applicable for a COSR scheme.
3. In Column 5, input the member’s National Insurance number. If unknown, provide their surname, full forename(s), date of birth, and termination details on a separate form CA1889.
4. For Column 6, enter the current surname and any previous surname if it has changed within the last year.
5. Complete Column 10 by entering the New Scheme Contracted-out number if transferring to a COSR scheme. Ensure to tick the appropriate box indicating whether it's a COSR or UK non contracted-out scheme.
6. Fill in parts 4 and 5 using capital letters as instructed. Sign and date where required.

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