If you purchase a single-user license for any edition of QuickBooks (Accountant, Pro, Premier, Desktop), the license actually allows you to install the software on a total of two computers with the condition that you own both the systems. The two installed systems will enable you to work on both the systems, one from the office and from home.
Other than that, you can also host it with third-party cloud service providers that allow you to access your software on any internet-connected device by just loggin into your account.