THE UNITED REPUBLIC OF TANZANIA
NATIONAL BUREAU OF STATISTICS
In reply please quote:
Our Ref: BD/50/156/01/28
Date: 31 August 2025
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
APRIL - JUNE 2025
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.
Index of Industrial Production Broad Sectors
The overall Index of Industrial Production decreased from 107.5 in the first quarter of
2025 to 106.4 in the second quarter of 2025, recording a decrease by -1.0 percentage
change over the period. The decrease is attributed to mining and quarrying subsector
which decreased by 3.8 percent, followed by water supply; sewerage, waste
management and remediation activities which decreased by 1.1 percent and electricity,
gas, steam and air conditioning supply decreased by 1.0 percent.
On other hand, long term index recorded an increase from 104.9 in the second quarter
of 2024 to 106.4 of second quarter 2025 recording an increase of 1.4 percentage
change. The increase was attributed to water supply; sewerage, waste management
and remediation activities which increased by 19.5 percent followed by electricity, gas,
steam and air conditioning supply subsector which increased by 19.4 percent.
Chart 1: Quarterly
Indices
of
Industrial
Production
by
Broad
Sector
(2018Q4=100):2018Q4 to 2025Q2
90.0
100.0
110.0
120.0
130.0
140.0
150.0
2021Q1
2021Q2
2021Q3
2021Q4
2022Q1
2022Q2
2022Q3
2022Q4
2023Q1
2023Q2
2023Q3
2023Q4
2024Q1
2024Q2
2024Q3
2024Q4
2025Q1
2025Q2
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 index in manufacturing sub -sector when comparing current quarter to the previous
quarter shows a slightly increase by 0.2 percent from 107.2 of first quarter of 2025 to
107.4 of second quarter of 2025. An increase was attributed to Manufacture of wood
and of products of wood and cork, except furniture; manufacture of articles of straw and
plaiting materials which increased by 30.6 percent, followed by manufacture of tobacco
products which decreased by 27.7 percent and Manufacture of basic pharmaceutical
products and pharmaceutical preparations which increased by 19.1 percent . Whereas,
Manufacture of textiles decreased by 29.2 percent followed by Printing and
reproduction of recorded media which decreased by 14.9 percent and manufacture of
paper and paper products which decreased by 10.6 percent.
On the other hand, comparing IIP in manufacturing sub -sector of second quarter of the
current year of 2025 to the corresponding quarter in the previous year of 2024, the
results indicate decrease by 0.1 percent from index of 107.5 in second quarter of 2024
to 107. 4 in second quarter of 2025. The decrease was attributed to manufacture of
textiles by 32.7 followed by manufacture of paper and paper products which dec reased
by 21.9 percent and manufacture of rubber and plastic products which de creased by
19.5 percent. However, during the similar period , the index shows a n incr ease in
manufacture of electrical equipment which in creased by 2 3.7 percent followed by
manufacture of furniture which increased by 22.3 percent and manufacture of
beverages which increased by 20.5 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 2024Q3 (2018Q4 = 100) ISIC REV. 4 Industrial Activity
Weight 2024Q2 2025Q1 2025Q2 Percentage change 2025Q1 VS 2025Q2 2025Q2 VS 2024Q2 B Mining and quarrying 28.8 95.4 94.2 90.6 -3.8 -5.0 7 Mining of metal ores 23.8 92.8 93.5 89.8 -4.0 -3.2 8 Other mining and quarrying 5.0 107.7 97.5 94.2 -3.3 -12.5 C Manufacturing 58.0 107.5 107.2 107.4 0.2 -0.1 10 Manufacture of food products 12.6 96.7 87.9 88.3 0.5 -8.6 11 Manufacture of beverages 14.5 119.5 144.0 144.0 0.0 20.5 12 Manufacture of tobacco products 4.8 103.6 69.5 88.7 27.7 -14.4 13 Manufacture of textiles 1.7 91.7 87.2 61.7 -29.2 -32.7 15 Manufacture of leather and related products 0.1 102.0 107.2 108.2 0.9 6.1 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials 1.4 90.4 71.6 93.6 30.6 3.6 17 Manufacture of paper and paper products 3.3 126.2 110.3 98.6 -10.6 -21.9 18 Printing and reproduction of recorded media 1.4 100.8 103.5 88.1 -14.9 -12.6 19 Manufacture of coke and refined petroleum products 0.1 107.1 112.1 121.1 8.0 13.1 20 Manufacture of chemicals and chemical products 2.6 110.9 113.8 101.4 -10.8 -8.5 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations 0.4 120.0 106.6 127.0 19.1 5.8 22 Manufacture of rubber and plastics products 2.6 125.1 108.1 100.7 -6.9 -19.5 23 Manufacture of other non-metallic mineral products 5.6 98.1 99.6 99.1 -0.5 1.0 24 Manufacture of basic metals 3.0 100.4 97.8 96.7 -1.1 -3.8 25 Manufacture of fabricated metal products, except machinery and equipment 0.3 117.1 95.4 96.7 1.3 -17.4 27 Manufacture of electrical equipment 0.5 81.8 101.4 101.2 -0.2 23.7 28 Manufacture of machinery and equipment n.e.c. 0.1 109.1 104.5 102.3 -2.2 -6.3 29 Manufacture of motor vehicles, trailers and semi- trailers 0.4 111.9 110.0 117.7 6.9 5.2 31 Manufacture of furniture 2.2 110.5 120.2 135.1 12.4 22.3 32 Other manufacturing 0.2 105.9 95.5 100.0 4.7 -5.6 33 Repair and installation of machinery and equipment 0.2 114.4 107.7 105.6 -2.0 -7.7 D Electricity, gas, steam and air conditioning supply 11.7 114.9 138.6 137.2 -1.0 19.4 E Water supply; sewerage, waste management and remediation activities 1.5 108.8 131.4 130.0 -1.1 19.5
Overall Index 100.0 104.9 107.5 106.4 -1.0 1.4