The "Rosebud" cheat does not exist in any version of The Sims (1, 2, 3, or 4). It is a persistent urban legend, likely confused with The Sims 1 cheat "klapaucius" (which gave §1,000) or simply a misremembered name.
This works in The Sims 1, 2, 3, and 4 (and Medieval). It grants §50,000 Simoleons instantly.
testingcheats true (Enter) — Required in TS3/TS4 for some cheats.motherlode (Enter).testingcheats true, then motherlode via on-screen keyboard.kaching / rosebud (TS1/TS2 only): §1,000.Money [amount] (TS4): Set exact household funds (e.g., money 1000000).household.autopay_bills true (TS4): Auto-pay bills.Use motherlode—it's the reliable standard across the franchise.