We examine how debt rollover risk affects firms’ capital structure following aggregate profitability shocks. Exploiting plausibly exogenous variation in perceived exposure to the Covid-19 pandemic, we find firms that are highly exposed to both rollover risk and aggregate shocks significantly raise leverage, compared to less exposed firms. The effect is amplified when regulators provide liquidity support to debt markets. Higher exposure to both risks, and consequent increase in leverage, leads to substantially diminished distance to default. We show the increase in leverage is consistent with standard trade-off theory, suggesting equity-holders tolerate a lower distance to default as long as cash flows received in continuation exceed that received in bankruptcy. Overall, our findings highlight how financial constraints can meaningfully affect firm policies following negative economic shocks.