If you’ve already created a will in California but need to make changes, you may be wondering: Do I need a brand-new will, or can I use a codicil? More importantly, how much will a codicil cost? A codicil is a legal amendment to a will—ideal for minor updates like changing your executor or adding a new beneficiary. But while it may seem simpler than redrafting an entire will, it's still a legal document that must meet California’s formal requirements to be valid. Here’s what