This year has already seen a flurry of activity when it comes to governments and the private sector partnering on social programs. Fewer than three months into 2016 and three governments have announced so-called pay for success or social impact bond projects, boosting the total number of such programs to 11 across the country.

Now, there may be a new option for governments interested in the model, but wary of its complicated nature. Under a pay for success or social impact bond program, private funders finance a preventive social or health program and only get paid back if the project meets its goals over the course of a predetermined set of years. The new model, announced by Third Sector Capital Partners on Thursday, offers a money back guarantee.

With a “social impact guarantee” or SIG project, governments front the money (instead of a private investor) and get paid back if the project doesn’t meet its goals. Specifics are sparse, but Third Sector co-founder George Overholser says he's currently working with two states on creating the country’s first SIG projects and hopes to announce them by the end of this year.