Out of this Rs 1,166 crore was raised in March alone by four non-life insurers, it said.
As many as seven of them raised Rs 2,181 crore in fiscal 2017, and more issuances are on the cards with non-life premium growth expected to be buoyant this fiscal, a study by the credit rating agency Crisil said here today.
The first hybrid bond issuance was in July 2016, and since then seven non-life insurers have tapped the debt market, it said.
Subordinated debt issuances, or hybrid bonds have emerged as a major source of growth capital and higher solvency ratio cushion-for non-life insurers, it said.
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Crisil has rated five issuances thus so far aggregating Rs 2,008 crore, which have been placed at competitive yields.
"Subordinated debt issuances have emerged as a very good alternative to equity as they enable insurers to raise capital at an optimal cost," Gurpreet Chhatwal, president, Crisil Ratings said.
"Hybrid issuances will gain impetus given buoyant growth prospects for non-life insurers," he added.
In fiscal 2017, non-life insurers registered a premium growth of 32 per cent driven by a four-fold rise in crop insurance premiums because of the Pradhan Mantri Fasal Bima Yojana.
According to Crisil, solvency ratios of non-life insurers are expected to improve because of a change in the way solvency margin is calculated.
Irdai has recently revised the factor used to compute solvency margin for crop insurance to 0.5 from 0.7, and extended the time-frame to recognise government dues in available solvency margin to one year from six months so as to enable capital optimisation and improve insurance penetration.
Crisil's rating methodology entails rigorous evaluation of the financial strength of the insurer and extent of cushion in solvency ratio over the regulatory minimum.
"For rating subordinated debt instruments, the extent of cushion in the solvency ratio that an insurer intends to maintain over and above the regulatory requirement on an ongoing basis is considered a critical factor," Krishnan Sitaraman, senior director, Crisil Ratings said.