Claims-Made vs Occurrence: How Your Policy Type Affects Cost
Most professional liability policies are claims-made. This has real cost implications you need to understand before buying. Claims-made policies start cheap but get more expensive each year until they reach their mature rate. Tail coverage is a hidden cost that catches many professionals off guard.
How Each Type Works
Claims-Made
Most professional liability policies
The policy must be active both when the incident occurred and when the claim is filed. Coverage starts from your retroactive date.
If you cancel or switch policies, you need tail coverage to report claims from past work.
Premiums increase each year for the first 4-5 years (step-rating) until reaching a mature rate.
Occurrence
Rare for professional liability
Coverage applies to incidents that occurred during the policy period, regardless of when the claim is filed.
No tail coverage needed. You can report claims from covered incidents even after the policy ends.
Premiums are flat and typically higher from year one because the insurer carries more long-term risk.
Claims-Made Cost Trajectory (Step-Rating)
Example based on a consultant with a mature rate of $1,500/yr for $1M/$1M coverage.
| Policy Year | % of Mature Rate | Estimated Premium |
|---|---|---|
| Year 1 | 40-50% | $600 - $900 |
| Year 2 | 60-70% | $900 - $1,050 |
| Year 3 | 75-85% | $1,050 - $1,275 |
| Year 4 | 85-95% | $1,275 - $1,425 |
| Year 5+ | 100% | $1,500 |
The first-year discount makes claims-made policies look cheap initially. But understand that your premium will roughly double by year 5 as coverage matures. Budget for the mature rate, not the introductory rate.
Tail Coverage Explained
Tail coverage is the most commonly overlooked cost in professional liability insurance. When your claims-made policy ends (retirement, closure, insurer switch), you need tail coverage to protect against claims from work done while the policy was active. Without it, there is no coverage for those past services.
| Tail Type | Typical Cost | When to Use |
|---|---|---|
| 1-Year Tail | 50-75% of annual premium | Short-term gap coverage (parental leave, sabbatical) |
| 3-Year Tail | 100-125% of annual premium | Moderate-risk professions with shorter claim windows |
| 5-Year Tail | 125-150% of annual premium | Most professionals changing careers |
| Unlimited Tail | 150-200% of annual premium | Retirement, practice closure, high-risk professions (lawyers, architects) |
Switching Insurers Without Coverage Gaps
Option 1: Prior Acts Coverage (Recommended)
Ask your new insurer to match your existing retroactive date. Most will do this for a modest surcharge (5-15%). This is usually the simplest and cheapest approach. Your new policy covers claims from work done back to your original retroactive date, creating seamless continuity.
Option 2: Tail from Old Insurer
Buy a tail policy from your departing insurer to cover claims from work done under their policy. This is more expensive than prior acts coverage (150-200% of your annual premium) and creates complexity since you will have two insurers for overlapping periods. Best used when the new insurer will not offer prior acts coverage or when there is a significant gap between policies.
Retirement Planning: Tail as a Business Expense
For professionals planning retirement, tail coverage is a significant expense that should be budgeted years in advance. A lawyer paying $4,000/yr for malpractice insurance should expect a tail coverage cost of $6,000-$8,000. An architect paying $3,000/yr should budget $4,500-$6,000. Many professionals set aside a portion of each year's premium into a tail coverage reserve fund. Some insurers offer retirement-specific tail programs with extended payment plans.