It depends. If you can reach agreement on all issues, you can have an uncontested divorce. An uncontested divorce might take a few months from start to finish. You will submit a marital separation agreement to the judge, who will look it over. Judges usually approve your own agreement, though they will carefully scrutinize anything involving children to determine if your agreement is in your child’s best interests.
However, if you disagree on any issues like child custody, child support, alimony, or the division of property or debts, then you will have a contested divorce. Contested divorces can take a year or more to resolve.
In a contested divorce, there is a lengthy fact-finding phase called discovery, in which you request information from your spouse and turn over requested information. Discovery can take months, especially if your spouse does not want to turn over documents. After discovery, you and your lawyer must prepare for trial, where a judge will make decisions about who receives what.
Also, if either you or your spouse is unhappy with the judge’s decision, then you might bring an appeal to a higher court. Appeals roughly take another year from start to finish. As you can see, seeking an uncontested divorce is usually much faster, though sometimes it is not possible.