## Growth-Indexed Bonds and Debt Distribution: Too Little, Too Costly?

_IMF Working Papers, April 10, 2026_

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**Canonical URL:** [Growth-Indexed Bonds and Debt Distribution: Too Little, Too Costly?](https://www.imf.org/en/publications/wp/issues/2026/04/11/growth-indexed-bonds-and-debt-distribution-too-little-too-costly-575357)

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## Bibliographic details
- Authors: Julien Acalin
- Published: April 10, 2026
- Series: IMF Working Papers
- DOI: https://doi.org/10.5089/9798229044394.001

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### Summary
- Sovereign state-contingent bonds have rarely been issued despite their theoretical debt stabilization properties.
- The paper analyzes when growth-indexed bonds are too limited in scale, and when they are too costly, to materially improve debt sustainability.
- Results show that the benefits of indexation are highly heterogeneous across countries.

### Key quantitative findings
- Under the realistic assumption that 20 percent of the debt stock is indexed, reductions in the upper tail of the debt distribution are modest.
- Full indexation yields more substantial improvements in debt distribution and sustainability, especially when combined with an optimal loading on growth.
- A sustained premium of 100 basis points would offset most of the gains from indexation for many countries.
- Pages: 51
- Series: Working Paper No. 2026/080
- DOI: https://doi.org/10.5089/9798229044394.001
- ISBN: 9798229044394
- ISSN: 1018-5941

### Analytical insights
- Heterogeneity: The effectiveness of growth-indexed bonds varies significantly across countries, implying country-specific assessments are necessary.
- Scale vs. cost trade-off: Limited scale of indexed issuance (e.g., 20 percent of debt) produces only modest improvements; achieving meaningful debt-stabilization effects requires large-scale adoption.
- Premium sensitivity: Even when full indexation is feasible, issuance premia—illustrated by a sustained premium of 100 basis points—can negate much of the stabilization benefit.

### Policy implications and recommendations
- Broad adoption: Debt-stabilization properties of growth-indexed bonds are likely to be limited unless a large-scale and coordinated effort achieves broad adoption.
- Low issuance premia: Success requires keeping issuance premia low; elevated premia (for example, 100 basis points sustained) can offset gains from indexation.
- Optimal design: Combining full indexation with an optimal loading on growth enhances outcomes and should be considered in bond design and policy frameworks.
- Country tailoring: Policymakers should evaluate country-specific heterogeneity when considering issuance of growth-indexed bonds.

*Source: Working Paper No. 2026/080*

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_Source: https://www.imf.org/en/publications/wp/issues/2026/04/11/growth-indexed-bonds-and-debt-distribution-too-little-too-costly-575357_