A financial obligation obtained through the improvement, construction, or purchase of a secondary or primary residence. One of the examples for acquisition debt is home mortgage. The Internal Revenue Services (IRS) gives certain tax advantages for those who have home acquisition debt. The taxpayers can subtract the interest paid throughout the tax years for mortgages which qualifies as a home acquisition debt. The IRS acknowledge home acquisition debt as any mortgage acquired after October 13,1987 that was used to build, buy or significantly improve a primary or secondary home. The home also secures the mortgage.