THE UNITED REPUBLIC OF TANZANIA
NATIONAL BUREAU OF STATISTICS
In reply please quote:
Our Ref: BD/50/156/01A/8
Date: 29 May 2026
National Bureau of Statistics, Takwimu House, 64 Lusinde Road, P. O. Box 2683
41104 Tambukareli – Dodoma, Tanzania. Tel: +255 26 – 2963822 E-mail: [email protected];
Website: www.nbs.go.tz
(All Official Correspondence should be
addressed to the Statistician General)
INDEX OF INDUSTRIAL PRODUCTION (IIP) RELEASE FOR
JANUARY- MARCH 2026
Definition
The Index of Industrial Production (IIP) measures volume changes in the production by
different industrial sectors of an economy. IIP is the index that indicates the performance of
various industrial sectors of the economy. The quarterly IIP shows the short-term fluctuations
in the economy as well as identifying the turning points in economic development at the
earlier stage. Furthermore, it is used in economic policy making and forecasting future
economic performance in the industrial sector.
The volume of industrial production is collected every quarter (Q1: January - March), (Q2:
April - June), (Q3: July - September) and (Q4: October - December).
Scope, Coverage and Classification
The IIP compilation follows the recommended International Standards Industrial
Classification of all economic activities (ISIC) Revision 4 to enhance international
comparison. The ISIC classifies all the economic activities of the economy and uses the term
‘industry’ in a broad sense to mean any economic activity. However, in the compilation of IIP
the scope covers four broad sectors of the economy as classified in the International
Recommendations for Industrial Statistics of 2008 and International Recommendations for
Index of Industrial Production of 2010. The sectors are mining and quarrying; manufacturing;
electricity, gas, steam and air conditioning supply and water supply; sewerage, waste
management and remediation activities.
Weighting and a Reference Period
The IIP uses industrial weighting approach for aggregating the elementary indices. The
approach focuses on the way industrial production is organized and data is easily accessible.
Weights used in IIP are value added for activities derived from the Annual Survey of
Industrial Production, 2015. The reference period for IIP is the fourth quarter (October -
December) 2018.
National Bureau of Statistics, Takwimu House, 64 Lusinde Road, P. O. Box 2683
41104 Tambukareli – Dodoma, Tanzania. Tel: +255 26 – 2963822 E-mail: [email protected];
Website: www.nbs.go.tz
Index Calculation Procedures
Indices are calculated by comparing the volume of production in the current period with that
in reference (base) period. The result at first stage is a set of volume relatives for the
elementary items in the index series. The elementary indices are subsequently aggregated
as weighted averages to obtain the indices at higher levels. The base weighted Laspeyres
index is used for calculation of index series.
IIP by Broad Industrial Sectors
The overall IIP decreased from 114.3 in the fourth quarter of 2025 to 110.2 in the first quarter
of 2026, representing a 3. 6 percent decline over the period recording. The decrease was
mainly driven by water supply; sewerage, waste management and remediation activities
which fell by 9.3 percent, followed by mining and quarrying (4.9 percent), Manufacturing (3.6
percent), and electricity, gas, steam and air conditioning supply (0.4 percent). These declines
contributed to the overall reduction in industrial production during the quarter.
On a year -on-year basis, the Industrial Production Index (IIP) increased from 107.5 in the
first quarter of 2025 to 110.2 in the first quarter of 2026, representing a 2.6 percent increase.
The growth was mainly driven by the electricity, gas, steam and air conditioning supply
sector, which rose by 6.3 percent, followed by the manufacturing sector, which grew by 4.8
percent resulting in an overall improvement in industrial production during the period.
Chart 1: Quarterly IIP by Broad Industrial Sector (2018Q4=100):2023Q1 to 2026Q1 80.0 100.0 120.0 140.0 160.0 2023Q1 2023Q2 2023Q3 2023Q4 2024Q1 2024Q2 2024Q3 2024Q4 2025Q1 2025Q2 2025Q3 2025Q4 2026Q1 Index Quarter Overall index Mining and quarrying Manufacturing Electricity, gas, steam and air conditioning supply Water supply; sewerage, waste management and remediation activities
National Bureau of Statistics, Takwimu House, 64 Lusinde Road, P. O. Box 2683
41104 Tambukareli – Dodoma, Tanzania. Tel: +255 26 – 2963822 E-mail: [email protected];
Website: www.nbs.go.tz
Index of Industrial Production in Manufacturing Industrial Activity
The Manufacturing Index decreased by 3.6 percent, from 116.5 in the fourth quarter of 2025
to 112.3 in the first quarter of 2026. The decline was mainly attributed to manufacture of
electrical equipment , which fell by 24.1 percent , followed by the manufacture of tobacco
products (21.9 percent), manufacture of beverages (9.4 percent), and manufacture of basic
pharmaceutical products and pharmaceutical preparations (8.4 percent).
Despite the overall decline, some manufacturing activities recorded a notable growth during
the quarter. Printing and reproduction of recorded media increased by 19.8 percent, followed
by the manufacture of fabricated metal products, except machinery and equipment (19.3
percent), manufacture of machinery and equipment n.e.c. (13.3 percent), and manufacture of
rubber and plastics products (12.2 percent).
On the other hand, comparing the Industrial Production Index (IIP) on a year -on-year basis,
the results indicate an increase of 4.8 percent, rising from an index of 107.2 in the first
quarter of 2025 to 112.3 in the first quarter of 2026. The increase was mainly attributed to the
manufacture of tobacco products, which increased by 77.0 percent, followed by the
manufacture of wood and products of wood and cork except furniture and the manufacture of
articles of straw and plaiting materials, which increased by 26.2 percent. Other notable
increases were observed in the manufacture of fabricated metal products (except machinery
and equipment), which rose by 25.7 percent, and the manufacture of basic metals, which
increased by 16.9 percent.
However, during the same period, the index recorded declines in several activities. The
manufacture of electrical equipment decreased by 20.6 percent, while the manufacture of
leather and related products declined by 12.0 percent. The manufacture of basic
pharmaceutical products and pharmaceutical preparations decreased by 9.8 percent, and the
manufacture of paper and paper products fell by 8.1 percent.
National Bureau of Statistics, Takwimu House, 64 Lusinde Road, P. O. Box 2683 41104 Tambukareli – Dodoma, Tanzania. Tel: +255 26 – 2963822 E-mail: [email protected]; Website: www.nbs.go.tz Quarterly Index of Industrial Production by Industrial Activity 2026Q1 (2018Q4 = 100) ISIC Level 2 Industrial Activity Weight 2025Q1 2025Q4 2026Q1 Percentage change 2026Q1 VS 2025Q4 2025Q1 VS 2026Q1 B Mining and quarrying 28.8 94.2 94.9 90.2 -4.9 -4.2 7 Mining of metal ores 23.8 93.5 92.1 89.1 -3.4 -4.8 8 Other mining and quarrying 5.0 97.5 107.8 95.9 -11.0 -1.6 C Manufacturing 58.0 107.2 116.5 112.3 -3.6 4.8 10 Manufacture of food products 12.6 87.9 88.6 89.2 0.7 1.5 11 Manufacture of beverages 14.5 144.0 153.1 138.8 -9.4 -3.6 12 Manufacture of tobacco products 4.8 69.5 141.1 123.0 -12.9 77.0 13 Manufacture of textiles 1.7 87.2 69.9 76.7 9.9 -12.0 15 Manufacture of leather and related products 0.1 107.2 104.4 101.1 -3.2 -5.7 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials 1.4 71.6 92.6 90.4 -2.4 26.2 17 Manufacture of paper and paper products 3.3 110.3 94.1 101.3 7.6 -8.1 18 Printing and reproduction of recorded media 1.4 103.5 86.9 104.1 19.8 0.6 19 Manufacture of coke and refined petroleum products 0.1 112.1 113.8 107.2 -5.8 -4.4 20 Manufacture of chemicals and chemical products 2.6 113.8 101.5 103.1 1.5 -9.4 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations 0.4 106.6 105.0 96.2 -8.4 -9.8 22 Manufacture of rubber and plastics products 2.6 108.1 104.4 117.2 12.2 8.4 23 Manufacture of other non-metallic mineral products 5.6 99.6 118.5 114.4 -3.5 14.9 24 Manufacture of basic metals 3.0 97.8 115.6 114.3 -1.1 16.9 25 Manufacture of fabricated metal products, except machinery and equipment 0.3 95.4 100.6 120.0 19.3 25.7 27 Manufacture of electrical equipment 0.5 101.4 106.0 80.5 -24.1 -20.6 28 Manufacture of machinery and equipment n.e.c. 0.1 104.5 102.3 115.9 13.3 10.9 29 Manufacture of motor vehicles, trailers and semi-trailers 0.4 110.0 122.5 120.0 -2.0 9.0 31 Manufacture of furniture 2.2 120.2 123.8 118.4 -4.4 -1.6 32 Other manufacturing 0.2 95.5 95.8 94.7 -1.2 -0.9 33 Repair and installation of machinery and equipment 0.2 107.7 106.5 108.2 1.6 0.5 D Electricity, gas, steam and air conditioning supply 11.7 138.6 147.9 147.2 -0.4 6.3 E Water supply; sewerage, waste management and remediation activities 1.5 131.4 139.3 126.4 -9.3 -3.8
Overall Index 100.0 107.5 114.3 110.2 -3.6 2.6