Forecast
Forward projections from the prediction engine — baseline plus an optimistic/pessimistic band and a confidence interval, per macro indicator. These are PROJECTIONS, not observations: generated from observed history, never a guarantee. A country we hold no projections for is shown honestly.
Forecast
Need it as JSON? GET /api/v1/forecast/country/{iso3}.
Tanzania: forward projections across 15 macro indicators, horizons 2019, 2021, 2023, 2026, 2027, 2028, 2029, 2030, 2031, 2035, 2036. These are projections, not observations — each carries an optimistic/pessimistic band and a confidence interval, anchored against the latest observed value where one is held.
Nowcast
Each indicator nowcast from its strongest leading series — inferable from observations already in hand.
For each indicator, Tanzania's strongest leading series is fit by ordinary least squares over their shared observed history, then the leader's already-observed recent values project the target — so the next year or two is inferable from data already in hand. These are nowcasts from a leading correlation: correlation, not causation, and not a guaranteed forecast.
Led by GDP (current US$) by 1 year (it moves inversely tothe target; r = -0.933 over 35 obs).
| Year | Nowcast | Implied by GDP (current US$) in |
|---|---|---|
| 2026 | 1.01 | 2025 (90.1bn) |
Latest observed-2.3(2026)· IMF DataMapper API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2027 | -2.24 | 1.87 | -6.35 | -3.11 – -1.36 |
| 2029 | -2.11 | 5 | -9.23 | -3.67 – -0.56 |
| 2031 | -1.99 | 7.2 | -11.18 | -4.03 – 0.04 |
| 2036 | -1.68 | 11.32 | -14.68 | -4.6 – 1.24 |
Blended 1-yr-ahead-2.53· skill-weighted across models
Method: linear_trend; lookback 8y; horizon 1y; confidence 80%
Latest observed18.98(2025)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2026 | 19.71 | 23.05 | 16.81 | 18.91 – 20.5 |
| 2028 | 21.15 | 26.94 | 16.13 | 19.31 – 22.99 |
| 2030 | 22.59 | 30.07 | 16.11 | 19.71 – 25.47 |
| 2035 | 26.19 | 36.77 | 17.03 | 20.49 – 31.9 |
Blended 1-yr-ahead19.21· skill-weighted across models
Track record±1.32typical miss · 1 realized · 7% MAPE
Method: linear_trend; lookback 8y; horizon 1y; confidence 80%
Latest observed90.1bn(2025)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2027 | 99.2bn | 105.4bn | 93.8bn | 96.1bn – 102.2bn |
| 2029 | 109.9bn | 120.6bn | 100.6bn | 101.7bn – 118bn |
| 2031 | 120.6bn | 134.4bn | 108.6bn | 106.9bn – 134.3bn |
| 2036 | 147.3bn | 166.9bn | 130.3bn | 116.8bn – 177.9bn |
Blended 1-yr-ahead99.4bn· skill-weighted across models
Method: weighted_composite; lookback 8y; horizon 1y; confidence 80%
Latest observed5.85(2025)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2027 | 6.11 | 6.45 | 5.81 | 5.92 – 6.3 |
| 2029 | 6.61 | 7.2 | 6.09 | 6.12 – 7.09 |
| 2031 | 7.1 | 7.87 | 6.44 | 6.3 – 7.91 |
| 2036 | 8.34 | 9.43 | 7.41 | 6.61 – 10.08 |
Blended 1-yr-ahead6.11· skill-weighted across models
Method: weighted_composite; lookback 6y; horizon 1y; confidence 80%
Latest observed1.3k(2025)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2027 | 1.4k | 1.5k | 1.3k | 1.4k – 1.4k |
| 2029 | 1.5k | 1.7k | 1.4k | 1.4k – 1.6k |
| 2031 | 1.6k | 1.8k | 1.4k | 1.4k – 1.8k |
| 2036 | 1.8k | 2.1k | 1.6k | 1.4k – 2.2k |
Blended 1-yr-ahead1.4k· skill-weighted across models
Method: weighted_composite; lookback 8y; horizon 1y; confidence 80%
Latest observed48.7(2026)· IMF DataMapper API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2027 | 49.91 | 52.57 | 46.84 | 48.36 – 51.46 |
| 2029 | 52.33 | 56.95 | 47.01 | 48.46 – 56.2 |
| 2031 | 54.75 | 60.71 | 47.88 | 48.54 – 60.97 |
| 2036 | 60.81 | 69.23 | 51.09 | 48.2 – 73.42 |
Blended 1-yr-ahead49.38· skill-weighted across models
Method: linear_trend; lookback 10y; horizon 1y; confidence 80%
Latest observed19.99(2025)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2026 | 20.71 | 24.61 | 16.82 | 19.79 – 21.64 |
| 2028 | 22.17 | 28.91 | 15.42 | 20.07 – 24.26 |
| 2030 | 23.62 | 32.33 | 14.91 | 20.4 – 26.84 |
| 2035 | 27.25 | 39.57 | 14.93 | 21.01 – 33.5 |
Blended 1-yr-ahead20.29· skill-weighted across models
Track record±2.34typical miss · 1 realized · 12% MAPE
Method: linear_trend; lookback 8y; horizon 1y; confidence 80%
Latest observed3.33(2025)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2027 | 4.27 | 5.48 | 2.96 | 3.93 – 4.61 |
| 2029 | 5.21 | 7.32 | 2.95 | 4.49 – 5.93 |
| 2031 | 6.15 | 8.87 | 3.24 | 5.06 – 7.25 |
| 2036 | 8.51 | 12.36 | 4.39 | 6.29 – 10.72 |
Blended 1-yr-ahead4.27· skill-weighted across models
Method: exponential_smoothing; lookback 6y; horizon 1y; confidence 80%
Latest observed42.22(2025)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2026 | 42.11 | 45.85 | 38.87 | 40.81 – 43.42 |
| 2028 | 41.98 | 48.45 | 36.37 | 38.88 – 45.09 |
| 2030 | 41.85 | 50.21 | 34.61 | 37.1 – 46.61 |
| 2035 | 41.53 | 53.35 | 31.29 | 32.92 – 50.15 |
Blended 1-yr-ahead42.37· skill-weighted across models
Track record±0.6typical miss · 1 realized · 1% MAPE
Method: weighted_composite; lookback 8y; horizon 1y; confidence 80%
Latest observed70.5m(2025)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2027 | 68.8m | 72.1m | 65.8m | 66.7m – 71m |
| 2029 | 67.9m | 71.1m | 64.9m | 62.8m – 72.9m |
| 2031 | 66.9m | 70.6m | 63.5m | 59.3m – 74.5m |
| 2036 | 64.4m | 69.6m | 59.6m | 51.1m – 77.8m |
Blended 1-yr-ahead71.2m· skill-weighted across models
Method: exponential_smoothing; lookback 10y; horizon 1y; confidence 80%
Latest observed2.58(2025)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2026 | 2.94 | 5.62 | 0.93 | 2.56 – 3.32 |
| 2028 | 3.82 | 8.46 | 0.35 | 3.06 – 4.59 |
| 2030 | 4.71 | 10.69 | 0.22 | 3.58 – 5.83 |
| 2035 | 6.92 | 15 | 0.57 | 4.75 – 9.09 |
Blended 1-yr-ahead2.76· skill-weighted across models
Track record±0.03typical miss · 1 realized · 1% MAPE
Method: weighted_composite; lookback 7y; horizon 1y; confidence 80%
Latest observed5bn(2018)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2019 | 5.4bn | 6.8bn | 4bn | 5.1bn – 5.7bn |
| 2021 | 6.1bn | 8.5bn | 3.6bn | 5.4bn – 6.7bn |
| 2023 | 6.8bn | 9.9bn | 3.6bn | 5.7bn – 7.8bn |
| 2028 | 8.5bn | 12.9bn | 4.1bn | 6.5bn – 10.5bn |
Blended 1-yr-ahead5.3bn· skill-weighted across models
Method: weighted_composite; lookback 8y; horizon 1y; confidence 80%
Latest observed5.39(2018)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2019 | 5.17 | 7 | 3.33 | 4.8 – 5.53 |
| 2021 | 4.9 | 8.08 | 1.72 | 4.18 – 5.62 |
| 2023 | 4.77 | 8.87 | 0.67 | 3.76 – 5.78 |
| 2028 | 4.66 | 10.46 | 0 | 3.03 – 6.3 |
Blended 1-yr-ahead5.39· skill-weighted across models
Method: mean_reversion; lookback 10y; horizon 1y; confidence 80%
Latest observed5bn(2018)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2019 | 5.4bn | 6.8bn | 4bn | 5.1bn – 5.7bn |
| 2021 | 6.1bn | 8.5bn | 3.6bn | 5.4bn – 6.7bn |
| 2023 | 6.8bn | 9.9bn | 3.6bn | 5.7bn – 7.8bn |
| 2028 | 8.5bn | 12.9bn | 4.1bn | 6.5bn – 10.5bn |
Blended 1-yr-ahead5.3bn· skill-weighted across models
Method: weighted_composite; lookback 8y; horizon 1y; confidence 80%
Latest observed1.57(2025)· World Bank Indicators API
| Year | Baseline | Optimistic | Pessimistic | Conf. band |
|---|---|---|---|---|
| 2026 | 1.51 | 1.78 | 1.25 | 1.45 – 1.58 |
| 2028 | 1.4 | 1.85 | 0.94 | 1.26 – 1.53 |
| 2030 | 1.28 | 1.86 | 0.69 | 1.09 – 1.47 |
| 2035 | 0.98 | 1.81 | 0.15 | 0.7 – 1.27 |
Blended 1-yr-ahead1.59· skill-weighted across models
Method: linear_trend; lookback 6y; horizon 1y; confidence 80%
Reliability badges show each indicator's best model skill— how much it beats a naive last-value forecast, measured out-of-sample on that series' own observed history (backtested one-step-ahead). A track record, not a guarantee of future accuracy.
Generated by the prediction engine (model prediction-engine-v1) on 2026-08-08 from observed history. Projections, not observations — never a guarantee of future values.
Machine-readable: GET /api/v1/forecast/country/TZA · Country page → · Full brief → · API docs
| 2027 | 0.87 | 2026 (94.9bn) |
Fit: Unemployment ≈ 3.6968 + 0·GDP (current US$). Correlation, not causation.
Led by Govt debt / GDP by 1 year (it moves withthe target; r = 0.783 over 25 obs).
| Year | Nowcast | Implied by Govt debt / GDP in |
|---|---|---|
| 2027 | -2.61 | 2026 (48.7) |
Fit: Current account / GDP ≈ -14.9014 + 0.2523·Govt debt / GDP. Correlation, not causation.
Led by Govt debt / GDP by 3 years (it moves inversely tothe target; r = -0.733 over 23 obs).
| Year | Nowcast | Implied by Govt debt / GDP in |
|---|---|---|
| 2027 | 2.65 | 2024 (49.9) |
| 2028 | 2.71 | 2025 (49.7) |
| 2029 | 2.97 | 2026 (48.7) |
Fit: CPI inflation ≈ 15.8145 + -0.2637·Govt debt / GDP. Correlation, not causation.
Led by Real GDP growth by 3 years (it moves inversely tothe target; r = -0.652 over 26 obs).
| Year | Nowcast | Implied by Real GDP growth in |
|---|---|---|
| 2027 | 39.16 | 2024 (5.53) |
| 2028 | 37.58 | 2025 (5.85) |
| 2029 | 37.35 | 2026 (5.9) |
Fit: Govt debt / GDP ≈ 65.9312 + -4.8441·Real GDP growth. Correlation, not causation.
Machine-readable: GET /api/v1/nowcast/country/TZA?indicator= · API docs
