The Tax Cuts and Jobs Act of 2017 affected the tax deduction for interest paid on home equity debt as of 2018. Under prior law, you could deduct interest on up to $100,000 of home equity debt, no matter how you used the money. The old rule is scheduled to return in 2026.
The bad news is that you now cannot deduct interest on home equity loans or home equity lines of credit if you use the money for college bills, medical expenses, paying down credit card debt, and so on. The good news is that the IRS has announced “Interest on Home Equity Loans Often Still Deductible Under New Law.” (See IRS Information Release IR-2018-32.)