MEMORANDUM **

Henry Anthony Williams appeals pro se from the district court’s judgment dismissing for lack of subject matter jurisdiction his action relating to the Internal Revenue Service’s alleged denial of tax credit for alimony payments. We have jurisdiction under 28 U.S.C. § 1291. We review de novo, Rundgren v. Wash. Mut. Bank, FA, 760 F.3d 1056, 1059-60 (9th Cir. 2014), and we affirm.

The district court properly dismissed Williams’s action for lack of subject matter jurisdiction because the complaint’s allegations were manifestly insubstantial. See Franklin v. Murphy, 745 F.2d 1221, 1227 n.6 (9th Cir. 1984) (“A paid complaint that is ‘obviously frivolous’ does not confer federal subject matter jurisdiction.” (citation omitted)).

The district court did not abuse its discretion in denying Williams leave to amend his complaint because he did not request leave to file an amended complaint and failed to sign the lodged amended complaint. See Fed. R. Civ. P. 11(a) (providing that “an unsigned paper [must be stricken] unless the omission is promptly corrected after being called to the attorney’s or party’s attention”); Johnson v. Mammoth Recreations, Inc., 975 F.2d 604, 607-10 (9th Cir. 1992) (setting forth standard of review and holding that a party seeking amendment after the deadline set forth in the scheduling order must demonstrate good cause, the focus of which is the diligence of the moving party).

AFFIRMED.