Massachusetts scales the insurance to the credential rather than to the company, which is unusual and worth understanding before you decide who on the crew gets certified. A Certified Commercial Applicator working on the ground carries bodily injury of $100,000 each occurrence and $300,000 aggregate plus property damage of $100,000 each occurrence. A Licensed Applicator, the lower credential, carries half of that: $50,000 each occurrence and $100,000 aggregate bodily injury, plus $50,000 property damage. Aerial applicators in both classes sit at the higher figures. Combined bodily injury and property damage limits are accepted so long as they equal or exceed the sum of the required individual limits.
There is a waiver most operators have never heard of. The financial responsibility requirement can be set aside where an applicator demonstrates employment by a business entity with net assets in excess of one million dollars, provided that employer maintains a Massachusetts registered agent for service of process and the applicator works exclusively for that employer. It is effectively a self insurance route for large employers. It is not a route for a small company, and it does nothing about the coverage you actually need to survive a claim.
The calendar is mostly tidy with one exception. The Pesticide Applicator Core license is $100 to apply and $100 to renew, Commercial Applicator Certification is $150 and $150, Private Applicator Certification is $100 and $100, and all three expire December 31 with a renewal window running October through the end of the year. A Pesticide Dealer License is $300 and $300 and expires February 28, on a renewal window running December through February. Exam registration runs $75 for the core license and $125 for the certifications and the dealer license, with a separate $28 online exam fee, and you have one year from passing the exam to submit the application. Late fees run $75 to $125 depending on the credential.