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Best way to pay off debt?
The most tax efficient way to get some cash would be to sell some stocks from the Fidelity account that have the lowest capital gains. The tax will typically be 15% of the capital gains. This will be a one-time cost which should save you money compared to paying 7.5% on the loan year after year. Tax on selling the stock options will probably be higher, since you imply there would be high capital gains, and some of the proceeds might even be taxed as income, not capital gains.