Hard underwriting is a type of underwriting arrangement in an IPO or securities offering where the underwriter — typically an investment bank or merchant banker — makes a firm, unconditional commitment to purchase all unsubscribed shares at the issue price from the issuer, regardless of investor demand. This provides complete certainty of fund raising to the issuing company, as the underwriter guarantees full subscription even if the market response is weak. In exchange for bearing this risk, the underwriter charges a higher underwriting commission than under soft underwriting arrangements. Hard underwriting is distinguished from soft underwriting (or standby underwriting), where the underwriter commits to purchase only the portion of shares not subscribed by the public. In India, SEBI's ICDR Regulations require mandatory underwriting for certain categories of public issues. Hard underwriting provides issuers with certainty but can be expensive, and underwriters managing this risk carefully assess issue pricing, market conditions, and investor appetite before committing to hard underwriting obligations.