Investing and tax guides for building a portfolio without hiding the trade-offs.
Investment choices are easier to evaluate when wrapper, diversification, concentration, fees, taxes and time horizon are kept separate. This hub connects the portfolio concepts to the tax mechanics that can change after-tax outcomes.
Start with the decision, not the product.
What does an ETF wrapper actually change?
How concentrated is my portfolio?
How much can fees compound into over time?
What changes when a gain becomes long term?
How should I think about RSU and ESPP income versus later investment gains?
A useful three-guide sequence.
These are the clearest entry points if you are new to this topic. They are not the only guides in the hub.
An ETF is a fund that trades on an exchange. Learn what the wrapper does, what can be inside it, what costs matter and why ETF does not automatically mean diversified.
Broad index funds and individual stocks solve different problems. Compare diversification, concentration, effort, cost and the role each can play in a portfolio.
Your portfolio mix can change even when you do nothing. Learn how asset allocation, diversification and rebalancing work together, and how to distinguish a deliberate risk decision from performance chasing.
Connected MFA tools for this topic.
The guides explain the mechanics. These tools let you change the assumptions that depend on your situation.
Separate your contributions from modeled growth under editable assumptions.
Keep investment assets in the context of the whole balance sheet.
Model wage income when equity compensation or tax decisions affect cash flow.
Put current markets and long-run context beside portfolio concepts.
Explore all 13 investing & taxes guides.
Each guide includes plain-English explanation, source notes, an interactive lab and a practical tool handoff.
What Is an ETF? A Plain-English Guide to the Fund Wrapper
An ETF is a fund that trades on an exchange. Learn what the wrapper does, what can be inside it, what costs matter and why ETF does not automatically mean diversified.
ETF vs Mutual Fund: What Actually Changes?
ETFs and mutual funds can own nearly identical portfolios. The important differences are how you trade them, how they are priced, potential tax mechanics, fees and how well the wrapper fits the account you are using.
Index Funds vs Individual Stocks: The Real Trade-Offs
Broad index funds and individual stocks solve different problems. Compare diversification, concentration, effort, cost and the role each can play in a portfolio.
Investment Fees and Expense Ratios: The Cost You Don't See as a Bill
A 0.20% fee can look tiny, but costs compound over decades. Learn what an expense ratio covers, what it does not cover, and how to compare investment costs in actual dollars.
Asset Allocation and Rebalancing: Keep Risk From Drifting by Accident
Your portfolio mix can change even when you do nothing. Learn how asset allocation, diversification and rebalancing work together, and how to distinguish a deliberate risk decision from performance chasing.
How Compound Interest Works: Contributions, Time and Growth
See how starting balance, recurring contributions, time and an assumed rate interact, and separate the dollars you contribute from the growth produced by compounding.
Short-Term vs Long-Term Capital Gains: Why the Holding Period Matters
Federal tax rules generally separate capital gains and losses by whether an asset was held for more than one year. Learn the holding-period distinction, basis, netting and why your final tax result is broader than one headline rate.
Tax-Loss Harvesting Basics: The Tax Benefit Is Not the Investment Plan
Realized investment losses can offset gains, but the wash-sale rule and replacement investment matter. Learn the mechanics before turning a tax idea into unnecessary portfolio churn.
Marginal vs Effective Tax Rate: Why Your Tax Bracket Is Not Your Average Rate
Understand why a marginal tax rate applies to the next dollar in a bracket while an effective rate is an average, and why a higher bracket does not tax all prior income at that rate.
RSU Taxes: Vesting, Withholding and What Happens When You Sell
Restricted stock units are usually taxed as compensation when shares or cash are delivered after vesting, then later share-price changes can create capital gains or losses. Learn the two tax events and why withholding may not equal the final bill.
Employee Stock Purchase Plans: When the Discount Is Worth the Concentration
An ESPP can let employees buy employer stock through payroll deductions, sometimes at a discount or with a lookback. Learn the cash-flow, tax and concentration trade-offs before treating the discount like free money.
Pay Off Debt or Invest? Compare the Trade-Offs Correctly
Compare contractual debt interest with uncertain market returns without overlooking employer matches, emergency cash, taxes, liquidity and time horizon.
Should You Invest Your HSA? Start With Medical Liquidity
HSAs can combine valuable tax treatment with long-term investing, but medical cash needs come first. Learn when investing HSA dollars can make sense and how deductible, out-of-pocket exposure and emergency savings change the answer.
The decisions overlap. Keep the context.
MFA Guides are educational, not individualized financial, investment, tax, legal, insurance or lending advice. Rules, rates and personal circumstances can change the result.