When you sell a primary home, a large share of the gain can be tax-free. See your taxable gain after the $250k / $500k exclusion and a rough tax estimate.
Your numbers
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Your gain
Taxable capital gain
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Uses the Section 121 exclusion, which requires owning and living in the home 2 of the last 5 years. Basis adds capital improvements; the gain subtracts selling costs. The tax estimate applies a 15% long-term capital gains rate; your actual rate may be 0%, 15%, or 20% plus state tax.