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Plain-English guides to the concepts behind our calculators. No jargon for its own sake — just the ideas that change how much you keep.

Retirement & risk

Sequence-of-returns risk

Why two portfolios with the same average return can end very differently — and why the years near retirement matter most.

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Why tax diversification matters

You can’t predict future tax rates — so spread your savings across taxable, tax-deferred, and tax-free buckets.

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Roth IRA income limits

Why high earners get phased out of the Roth — and the doors to tax-free growth that stay open.

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Borrowing

15-year vs 30-year mortgage

Payment vs total interest vs flexibility — and the 30-year-plus-extra-payments hybrid most people miss.

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Insurance

Types of life insurance explained

Term, whole, universal, and IUL — what each does, who it suits, and the trade-offs, with 2025 market data.

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Plenvest guides are educational and do not constitute financial, tax, or investment advice. They explain general concepts; your situation may differ. For personal guidance, talk to a licensed advisor.