Prior acts coverage and retroactive dates explained

Why prior acts questions decide whether your policy pays

Professional liability, tech E&O, and most management liability policies are written claims-made. The policy that responds to a claim is the one in force when the claim is reported, not the one that was in force when the work was performed. That single fact creates two problems every professional eventually faces:

• Changing carriers or starting a practice: will the new policy cover work you already performed?
• Retiring or leaving practice: who pays if a claim surfaces from work you did years ago?

The answers are prior acts coverage and tail coverage. Get them wrong and a policy can look like coverage while leaving exactly the work you are most worried about uninsured.

What prior acts coverage is

Prior acts coverage means your current policy covers work you performed before the policy started. The dividing line is the retroactive date:

• Claims from work done on or after your retroactive date: covered, subject to policy terms.
• Claims from work done before it: excluded, unless you arranged full prior acts coverage.

When you buy a new policy the goal is simple: keep the retroactive date where it is, or push it earlier.

Full prior acts coverage, defined

Full prior acts is not a separate coverage you buy. It is a retroactive date far enough back that every year of your professional work sits inside the policy. Three things make it real:

1. The declarations page shows a retroactive date at the start of your professional work, not the policy inception date.
2. The application discloses your prior work, including moonlighting, prior firms, and side engagements.
3. No prior acts exclusion or known-acts wording removes the work you are worried about.

If the retroactive date is the policy start date, you have no prior acts coverage at all, no matter how the agent describes it.

Prior acts coverage vs retroactive date

What a prior acts exclusion does

A prior acts exclusion is the mirror image of prior acts coverage. Carriers use it when they do not want to inherit your history, which is common after a lapse, when switching to a carrier that will not honor prior acts, or when the application leaves out earlier work. Combined with claims-made wording, it can quietly strand every file you closed before the new policy date.

How to repair a prior acts gap

• Ask the new carrier to match your old retroactive date. Many will, with underwriting review. This is the cleanest repair.
• Bridge the gap with a successor policy whose retroactive date reaches back over the lapsed period.
• Negotiate a partial date where a full repair is not possible. Partial protection beats none.

The earlier you repair a gap, the more options you have. Once a claim surfaces from the excluded period, it is too late.

First policy, no prior coverage: what actually happens

1. Full prior acts from day one. Many carriers set a first-time buyer's retroactive date back to the start of professional work, sometimes at little or no extra premium. Ask explicitly.
2. Retroactive date equals policy start. The default if you do not ask. Work before the policy start is excluded, including moonlighting and side work.
3. First claims-made policy with a no-prior-coverage disclosure. Carriers price first-time buyers partly on the absence of inherited exposure, so first-year premiums are often the lowest you will see. Disclose prior work honestly; misrepresenting it can void the policy later.

Tail coverage: closing the door behind you

A tail policy, technically an extended reporting endorsement, attaches to your expiring claims-made policy and keeps it responsive to claims reported later for work done during the policy period. You need one when you retire or sell a practice, when you change carriers and the new retroactive date does not reach back far enough, or when a firm dissolves.

Tail pricing is commonly a percentage of expiring premium, and on a permanent basis it can run to roughly one to three times annual premium depending on carrier and practice. The mistake to avoid is letting a claims-made policy lapse with neither a tail nor a successor policy.

The checklist

1. Know your retroactive date and check it at every renewal.
2. Ask for full prior acts on any new policy, especially your first.
3. Never let a claims-made policy lapse without a tail or matching successor.
4. Disclose prior professional work honestly, including moonlighting.
5. Get the tail decision in writing before the policy expires.
6. Compare carriers, because prior acts terms vary more than base pricing does.

Prior acts by profession

The mechanics are the same across lines. What changes is how each carrier prices prior exposure and how much history they will accept.

• Lawyers professional liability
• Lawyers by state
• CPA and accountant professional liability
• Tech E&O
• Tech E&O by state
• Insurance agents E&O
• Tax preparer E&O
• Mortgage broker E&O
• Property manager E&O
• Private investigator insurance
• AI ethics auditor insurance
• Allied health professional liability
• Professional liability overview