Proportional CoversAdvanced

Portfolio Transfer

Buying in and out of unearned risk

The premium and reserve payments that put a reinsurer on risk for business already in force, and take it off risk when the treaty ends.

Open the interactive version → definition, quiz, structure diagram and progress tracking

Definition

A portfolio entry (or portfolio assumption) transfers the unearned premium — and the matching unexpired exposure — on business already written before a new proportional treaty incepted, so the incoming reinsurer is properly compensated for risk it is now carrying that it did not price into a full year. A portfolio exit (or portfolio withdrawal) does the reverse at termination: it pays the outgoing reinsurer's share of unearned premium back to the cedent, in exchange for full release from the unexpired risk and outstanding reserves.

Entry and exit exist so a treaty change does not leave a gap — or a double payment — for the sliver of risk that straddles the boundary between an old arrangement and a new one.
The standard entry payment is the unearned premium reserve (UPR) on the transferred book, sometimes with a loading; the standard exit payment is the same UPR plus, on a "clean cut" basis, outstanding loss reserves as well.
A clean cut exit transfers loss reserves along with unearned premium, ending the outgoing reinsurer's exposure entirely; a run-off exit leaves outstanding claims with the outgoing reinsurer to pay out as they develop — the two are very different economically and must be explicit in the termination clause.

Portfolio entry/exit premium = Cedent's share × Unearned premium reserve on the transferred book

A clean-cut exit adds outstanding loss reserves to the same calculation.

Worked example

A quota share treaty renews with a new reinsurer replacing the old one. The new reinsurer receives a portfolio entry payment equal to 40% of the unearned premium reserve on the in-force book, compensating it for exposure it is assuming on policies it never priced from day one.

Scenario · figures in USD

Swapping reinsurers mid-portfolio, on a clean cut

Union Casualty replaces its quota share reinsurer at 1 January. The outgoing reinsurer, Falcon Re, held a 45% share. Falcon's unearned premium reserve on the transferred book is $6.2M and its outstanding loss reserve is $3.8M. The treaty terminates on a clean-cut basis.

Falcon Re's treaty share	45%
Unearned premium reserve (Falcon's share)	$6.2M
Outstanding loss reserve (Falcon's share)	$3.8M
Clean-cut exit payment — Falcon pays Union	$10.0M
Falcon's obligations after the payment	Nil — fully released
The incoming reinsurer	Receives a $10.0M portfolio entry payment and assumes the risk in full

So whatOn a clean cut, the outgoing reinsurer pays for the privilege of walking away entirely — both the unexpired premium risk and every open claim. It is buying certainty, exactly like a commutation, just triggered by a treaty change rather than a run-off decision.

Check your understanding

On a "clean cut" portfolio exit, what does the outgoing reinsurer transfer along with the unearned premium reserve?

Outstanding loss reserves as well, ending its exposure entirely. A clean cut is defined by transferring both the unearned premium and the outstanding loss reserves, which is what ends the outgoing reinsurer's exposure completely.

Why does an incoming reinsurer on a mid-portfolio treaty change need a portfolio entry payment?

It compensates the incoming reinsurer for exposure on business it did not price from inception. The incoming reinsurer is assuming unexpired risk it never priced as a full-year proposition — the entry payment is compensation for exactly that.

Word problem

A reinsurer holds a 30% share of a quota share treaty being terminated on a clean-cut basis. The full-account unearned premium reserve on the transferred book is $22M and the full-account outstanding loss reserve is $9M. Calculate the reinsurer's share of each, and the total clean-cut exit payment it must make.

Show a hint

Apply the reinsurer's percentage share to each reserve separately, then add the two together.

Reveal the worked answer

Reinsurer's share of unearned premium reserve = 30% × $22M = $6.6M
Reinsurer's share of outstanding loss reserve = 30% × $9M = $2.7M
Total clean-cut exit payment = $6.6M + $2.7M = $9.3M

The reinsurer pays $9.3M — its 30% share of both reserves combined — and is then released from the treaty entirely, whatever those claims eventually cost to settle. That $9.3M is the price of certainty, paid to the cedent rather than the other way around, because on a clean cut it is the outgoing reinsurer buying its own exit.