Jesuit Ten-Percent Lending Policy

The Jesuit Ten-Percent Lending Policy sets a strikingly low rate against the expensive credit described in Japan, but its reach was limited: loans were modest and reserved for Christians. The policy joined finance to evangelization, turning a concession on interest into a means of giving Christianity practical appeal.

The Policy and Its Stated Purpose

Uraga-noh-Tadamasa explains that the Father-Visitor dell'Aqua petitioned the Pope almost twenty years earlier for permission for the Society of Jesus to lend at ten percent. The proposal was approved. According to Uraga, the purpose was not simply to make credit cheaper: because only Christians could receive these modest loans, the arrangement was expected to lend attraction to Christianity and bring converts.

That restriction is central to how the policy worked. It did not offer low-interest credit to borrowers generally; it made access to a favorable loan conditional on Christian affiliation. The policy thus connected material assistance to religious allegiance, giving the institution a practical incentive for conversion alongside its preaching.

Contrast with Japanese Credit

Uraga places the ten-percent rate against a far harsher market. He says loans in Japan were never below fifty percent and usually ran from sixty-five to seventy percent, sometimes reaching eighty. When Blackthorne objects that such rates amount to usury, Uraga answers that, by the local standard he describes, usury would not begin below one hundred percent. Their exchange reveals not only a dramatic difference in borrowing costs, but also a difference in where each man draws the boundary of exploitation.

The loans Uraga attributes to the Jesuits were always modest, so the policy should not be mistaken for an alternative system capable of replacing the broader credit market. Its significance lies in the contrast it offered: a sharply lower rate, available to a restricted religious group, within a society where borrowing could be extraordinarily costly.

Trade, Influence, and Institutional Context

The policy operates within a larger commercial network that helps explain the Jesuits’ influence. Portuguese traders carried Chinese silk from Macao in exchange for Japanese silver, while Jesuit priests learned Chinese and Japanese and served as interpreters and negotiators. As this trade grew important to samurai life, Japanese rulers had reason to tolerate both the Portuguese presence and the spread of Christianity. The lending policy extends that entanglement of commerce and religion from international trade into the terms of local credit.

Elsewhere, Jesuit dealings likewise combine religious concessions with commercial arrangements. In negotiations with Toranaga, Alvito secures a promise that a foundation stone for a major Christian temple may be laid on the forty-first day, while also proposing that Ferriera carry ten thousand ducats of Toranaga’s gold to Goa for investment, with half the profit offered to him. These are not loans under the ten-percent policy, but they show the wider setting in which the Society’s religious standing, financial activity, and political bargaining intersect.