Home improvements made during the same calendar year as selling the home can offer some tax relief from any profit made during the sale. For 2019 there is also one big tax credit for adding energy efficient systems to your home, including solar, geothermal or fuel cell technologies. Improvements done to a home office are also tax deductible.
Your tax bracket, which can change from year to year, is determined by your annual income. The progressive income tax system we use means that the more money you earn the higher the tax bracket for this additional income. This does not mean that you pay a higher rate on all of your income, but only that income which fall into subsequent tax brackets.