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Case studies

Real decisions, full math.

Each case study works through one common switching decision: what it costs in tax today, how the two paths compare after every tax is paid, and the return the new investment needs to break even.

Index fund → factor tilt

The real cost of switching from an index fund to a factor tilt

$200,000 with an $80,000 gain. What does selling cost, and how much does small-cap value have to beat the index by to make it worth it?

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Mutual fund → ETF

Should you sell mutual funds for ETFs and pay the tax?

A 0.85% fund with a $50,000 gain versus a 0.05% ETF. Why the tax is usually 'early, not extra', and the case where switching never pays.

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Tax-loss harvesting

When switching pays you: the math of tax-loss harvesting

A $20,000 loss, harvested. What it saves, what the lower cost basis takes back later, and why it usually still wins.

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Advisor fees

Paying an advisor 1%: the real cost of leaving vs staying

$500,000 at 1% a year plus fund fees. What leaving costs in tax, how fast it pays back, and the transfer that may avoid the tax entirely.

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Concentrated stock

Selling a concentrated stock position: what diversification really costs

$300,000 in one stock with a $240,000 gain. The tax bill, the price of diversification, and the return the stock has to beat.

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