High-yield savings vs CDs vs Treasury bills in the US for 2026 — real APYs, FDIC coverage, liquidity tradeoffs, and which is best for emergency funds and sinking funds.

Roth IRA vs Traditional IRA in 2026: contribution limits, tax math, income phase-outs, and a CFP candidate’s framework for picking one.

401(k) employer match explained for 2026: vesting, common formulas, the real math, and why missing the match can cost you $400K over a career.

Compound interest explained with real US math — how starting to invest at 25 vs 35 changes your retirement balance by hundreds of thousands of dollars.