Start from SPI Tabel 3.21.a — the only table splitting UMKM credit into micro / small / medium, with both outstanding balance and NPL, per bank group.
Add state banks, regional development banks, national private banks and foreign branches into one national figure per segment.
The brief is small and medium only. Micro rows out.
Divide total bad loans by total outstanding. The small book is ~1.5× the medium book — a simple average of percentages would give the wrong answer.
Medium is the persistent problem. Worst segment in every period since 2021, never below 4.8%, and 5.51% in April 2026. Most of that book sits with national private banks — about Rp 215 trillion of Rp 332 trillion — in larger single-borrower loans exposed to construction, wholesale trade and manufacturing.
Micro, though excluded, is the one to watch. It nearly doubled — 2.18% in 2021 to 4.31% now — as KUR loans age and pandemic-era restructuring winds down. Still the cleanest tier, but on its current path it crosses the small book. The gap micro creates in this report's headline is narrowing because micro keeps deteriorating. That is itself a signal.
Ranked across all 34 provinces, Jawa Barat comes 7th worst — but everything above it is small. NTT holds Rp 7.5 trillion; Jabar holds Rp 88.4 trillion. Limit the comparison to SME books of Rp 30 trillion or more, and Jawa Barat stands alone at the top, 105 basis points clear of the next big book. It holds 10.4% of the country's SME loans and 13.8% of its SME bad loans.
Jawa Barat worsened 34 basis points — the only big book deteriorating meaningfully. In money: its stock of bad SME loans grew ~Rp 450 miliar in four months, 5.24 → 5.69 trillion, with the medium segment doing the damage (7.51% → 8.31%).
DKI improved 61 points. The country's largest book is cleaning up. Jateng and Jatim were flat — for books that size, flat is healthy. Banten rose 66 points, still below national but the fastest riser in Java; worth checking again in three months.
The small-province extremes — NTT, Maluku, Sulawesi Barat — swing a full point on tiny bases. That is noise, not signal.
Construction is the worst sector at 9.92%, double the SME average — an Indonesia problem, not a Jabar one. Trade is the weight: Rp 391.8 trillion, nearly half the national book, supplying 50.5% of the national SME NPL stock. Agriculture is the cleanest large sector at 2.71% — remember that number.
Manufacturing is the smoking gun: 9.34% vs 5.29% national, +4 points on the province's second-largest SME book, alone a quarter of Jabar's bad-loan stock. Agriculture runs twice its national rate. The clean spots are real too — education 0.70%, professional services 1.25%, healthcare 1.68%, all better than national. The consistency with the Bandung–Bekasi–Karawang manufacturing belt is our reading, not something the data states.
Inside Jabar's medium segment: manufacturing 13.36%, construction 11.95%, trade 7.75%. The trade cell deserves the closest attention — it sits on the largest medium book in the province and it is accelerating. That single cell is the main engine behind Jabar's medium ratio moving 7.51 → 8.31.
If each of Jabar's sectors performed at its national rate, the province's industry mix would produce just 5.12% — composition explains only a quarter-point. The remaining 1.32 points is the same industries performing worse inside West Java. The problem is local execution and local borrowers, not portfolio shape.
4.86% — SME NPL, small and medium only, April 2026. An actual from the regulator's portal, not an estimate, drifting up ~25 bps a year.
Excluding micro raises the ratio. The risk sits in the medium segment at 5.51% — and micro is catching up fast.
Jawa Barat is the real finding. Worst big-book credit quality in the country, 6.44% and still deteriorating, its medium segment at 8.31% and accelerating. The volume stall since 2023 reads as deliberate risk retrenchment — and the province's clean 1.45% all-credit NPL is the corporate book masking the rot underneath.
By industry the problem has a name: manufacturing (+4 pp vs national) and medium-segment trade (+145 bps in four months). Shift-share says it's performance, not mix.
Underwrite West Java medium tickets to a visibly tougher standard, and overlay agriculture there despite its clean national profile.