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What is a Keichō? The Heartbeat of Ancient Japan's Tax System

Under the ritsuryō legal system that took shape in Japan during the seventh and eighth centuries, the central government tracked its subjects with remarkable precision. Every six years, a koseki household register fixed the population for the purpose of allotting rice paddies under the handen system. But in addition to this, a separate document called the keichō was prepared every single year. Its job was different: the keichō recorded the changes in each household — births, deaths, ages, and movements — in order to calculate the chō and yō taxes, which were levied on individuals rather than land. The chō was paid in regional products such as cloth, silk, or local goods, while the yō represented an obligation of labor that could be commuted into payment.

Keichō documents were thus the working ledgers of the early Japanese state. They were drawn up by district officials, sent up through provincial administrations, and ultimately filed at the central capital. Without them, the elaborate machinery of Nara-period governance — which supported the building of grand temples, capitals, and roads — would simply not have functioned.

A Document That Almost Vanished

Despite their importance, keichō from the Nara period are almost entirely lost. Paper was a costly material, and once a year's tax accounting was complete, the registers were typically reused — turned over and written upon on the reverse side, or cut up to bind into other ledgers. The vast majority that survive today do so only because of one extraordinary stroke of historical fortune: at the great Tōdaiji Temple in Nara, the office in charge of sutra copying scavenged old administrative documents from the central government to use as scrap paper. These reused sheets were eventually stored in the Shōsōin treasury and preserved for over a thousand years.

The Shizuoka scroll belongs to this lineage. It was once part of the Shōsōin's vast archive of recycled paperwork. During the Meiji era, the kokugaku scholar Kosugi Sugimura (1834–1910), who was active in early Meiji-period efforts to compile and study ancient Japanese sources, took the document out of the Shōsōin. It later disappeared from public view — only to be rediscovered, in modern times, in the holdings of the Fujie family. After this remarkable journey, it found its present home in Shizuoka.

Why It Was Designated an Important Cultural Property

On June 6, 1980, Japan's national government formally designated this scroll an Important Cultural Property in the category of ancient documents. The reasons are layered and compelling.

First, the document is exceptionally rare. With the Shōsōin holdings as the only major collection of Nara-period administrative paper, surviving keichō outside that treasury can practically be counted on one hand. Among them, the Shizuoka scroll is the most coherent and substantial — preserving a continuous run of fifty-nine lines of original eighth-century writing.

Second, the content is a primary source of the highest order. Each line records a real individual: name, age, status, and household. For historians studying the realities of life under the ritsuryō system — family structure, demographics, the burden of taxation, the interplay between province and capital — every name on this scroll is a small, hard-won piece of evidence.

Third, the scroll has a remarkable double identity. Its reverse side carries the writings of the Office for the Construction of Tōdaiji (Zō-Tōdaiji-shi), in the form of accounts relating to a sutra-copying project of Tenpyō 18 (746) — including records of brushes and ink procured for the copying of the entire Buddhist canon, and a register of paper allocations for sutra commentaries. In a single piece of paper, in other words, two of the most important administrative cultures of eighth-century Japan — civil tax administration and Buddhist temple bureaucracy — are physically layered together.

Highlights and Things to Look For

To the casual eye, an ancient tax register may seem austere. Yet for visitors who pause to consider what they are seeing, the rewards are deep.

The brushwork itself is a quiet wonder. The hand of an eighth-century Japanese clerk — disciplined, abbreviated, and economical — reveals how official documents were actually produced when paper was precious and clerical staff worked under tight schedules. The characters are written in a confident administrative style, often with abbreviations and conventions that scholars still parse with care.

The geography of the document is also striking. "Yamashiro Province, Otagi District" corresponds to the area of present-day Kyoto City and its northern environs — the very landscape that would, just two generations later, become the site of Heian-kyō, Japan's long-lasting imperial capital. To read names from Otagi in 732 is, in a sense, to glimpse the human prelude to Kyoto.

Visitors with an eye for materiality may also reflect on the act of reuse itself. Turning over a tax register and writing temple accounts on the back is not just a thrifty gesture — it is the very mechanism by which this fragment escaped destruction. The scroll is, in a literal sense, a survivor.

Visiting the Scroll: The Shizuoka Prefectural Museum of Art

The scroll is owned by Shizuoka Prefecture and held at the Shizuoka Prefectural Museum of Art, which opened in April 1986 on the wooded slopes of Nihondaira in the Suruga Ward of Shizuoka City. The museum is best known for its collections of Japanese and Western landscape painting from the seventeenth century onward, its works by artists with ties to Shizuoka, and a celebrated Rodin Wing housing the sculptor's "Gates of Hell" and other masterpieces. The keichō scroll, an extremely fragile early document, is not on permanent display — it appears only on special occasions, so visitors hoping to see the original should check the museum's exhibition schedule in advance.

Even when the scroll is not on view, the museum itself is a worthwhile destination. Set among sculpture-dotted promenades and offering views toward Mount Fuji on clear days, it is one of the most pleasantly situated regional art museums in Japan.

Around the Museum

The setting of the museum — the Nihondaira area between Shizuoka and Shimizu — is itself part of the experience. A short drive or bus ride away, you can visit:

• Nihondaira Plateau, famous for sweeping views of Mount Fuji, Suruga Bay, and the tea fields of Shizuoka.
• Kunōzan Tōshōgū, an early Edo-period shrine where Tokugawa Ieyasu was first buried — connected to Nihondaira by a scenic ropeway.
• Miho no Matsubara, a UNESCO-listed pine grove forming part of the Mount Fuji World Heritage site, where the legend of the celestial maiden's robe is said to have unfolded.
• Sumpu Castle Park in central Shizuoka, where Tokugawa Ieyasu spent his retirement, and where remnants of the early Edo castle landscape can still be traced.

For travelers interested in connecting the document's content with its original setting, the historic neighborhoods of northern Kyoto — corresponding roughly to the old Otagi District — make a thought-provoking secondary destination on a longer trip.