The cost to upgrade your electrical panel will depend on how many amps you're upgrading too.
If you currently have 100 AMPS and want to upgrade your electrical panel to 200 AMPS you can expect to pay from $1,500.00 to $3,000.00
If your electrical panel indoors is being updated to 200 AMPS then your incoming meter box and service entrance wire will also need to be upgraded to 200 AMP service which requires a bigger meter box and service entrance wire as well as a new bigger overhead service wire to your meter box or bigger underground service wire if your electrical service is delivered to your home underground.