You are missing a big part of the equation. IF this plan takes effect, the contribution won’t actually be 11%. (Nor will the DC contribution be a full 9%) The actual contribution will be 11% of earnings up to the IRC 401(a)(17) limit (28.C.7.) That limit for 2023 is $330,000. Some years it may increase, but that’s not guaranteed as it’s controlled by the IRS.