By collecting DNA from arrestees and those convicted of all crimes, law enforcement can identify criminals earlier and create more efficient investigation practices. Solving crimes sooner reduces costs associated with misdirected investigations. With a DNA match, law enforcement can quickly narrow in on the right suspect, saving untold man hours and manpower used in traditional investigations. This cost savings can then be redirected to other crimes where DNA is not available and traditional investigation techniques are the only means of solving the crime.
When confronted with a DNA match, suspects often accept plea bargains, which eliminate costly trials.
Several studies have been conducted showing cost savings from expanding DNA databases:
Why Arrestee DNA Legislation Can Save Indiana Taxpayers Over $60 Million Per Year
This study shows how arrestee DNA legislation can save Indiana taxpayers over $60 million per year.
The Effects of DNA Databases on Crime
This independent, academic study shows that “in one year alone, $21 billion was saved in crime prevention in the US by expanding US databases to include more offender profiles”.
Denver DNA Project
A study sponsored by the US Department of Justice, the City of Denver, Colorado found that for every $1 spent on DNA, a $90 return on investment was realized in savings on crime and investigative costs.