Tax revenue vs. Electoral Democracy Index in Iran
Iran: Tax revenue vs. Electoral Democracy Index was 0.159 in 2025. ▲ Rising
Latest (2025)
0.159
Change on year
down 4.2%
World rank
152nd
of 176 countries
All-time high
0.234
in 1999
All-time low
0.029
in 1900
Years of data
126
1900–2025
Tax revenue vs. Electoral Democracy Index in Iran, 1900–2025
Source: V-Dem (2026) – processed by Our World in Data.
Analysis
The most recent figure for tax revenue vs. electoral democracy index in Iran is 0.159, measured in 2025.
Compared with earlier readings it is down 4.2% on the previous year and down 14.5% over ten years.
Over the whole period, tax revenue vs. electoral democracy index in Iran peaked at 0.234 in 1999 and was at its lowest, 0.029, in 1900.
Iran ranks 152nd of 176 countries on this measure, in the bottom quarter.
The long-run direction has been consistently rising across the 126 years of available data.
Tax revenue vs. Electoral Democracy Index in Iran, year by year
| Year | Value | Change |
|---|---|---|
| 1900 | 0.029 | — |
| 1901 | 0.029 | +0.0% |
| 1902 | 0.029 | +0.0% |
| 1903 | 0.029 | +0.0% |
| 1904 | 0.029 | +0.0% |
| 1905 | 0.029 | +0.0% |
| 1906 | 0.08 | +175.9% |
| 1907 | 0.121 | +51.2% |
| 1908 | 0.118 | -2.5% |
| 1909 | 0.106 | -10.2% |
| 1910 | 0.137 | +29.2% |
| 1911 | 0.136 | -0.7% |
| 1912 | 0.121 | -11.0% |
| 1913 | 0.121 | +0.0% |
| 1914 | 0.121 | +0.0% |
| 1915 | 0.121 | +0.0% |
| 1916 | 0.121 | +0.0% |
| 1917 | 0.121 | +0.0% |
| 1918 | 0.121 | +0.0% |
| 1919 | 0.121 | +0.0% |
| 1920 | 0.121 | +0.0% |
| 1921 | 0.088 | -27.3% |
| 1922 | 0.145 | +64.8% |
| 1923 | 0.113 | -22.1% |
| 1924 | 0.115 | +1.8% |
| 1925 | 0.08 | -30.4% |
| 1926 | 0.056 | -30.0% |
| 1927 | 0.115 | +105.4% |
| 1928 | 0.115 | +0.0% |
| 1929 | 0.115 | +0.0% |
| 1930 | 0.115 | +0.0% |
| 1931 | 0.115 | +0.0% |
| 1932 | 0.114 | -0.9% |
| 1933 | 0.113 | -0.9% |
| 1934 | 0.113 | +0.0% |
| 1935 | 0.113 | +0.0% |
| 1936 | 0.113 | +0.0% |
| 1937 | 0.113 | +0.0% |
| 1938 | 0.113 | +0.0% |
| 1939 | 0.113 | +0.0% |
| 1940 | 0.113 | +0.0% |
| 1941 | 0.1 | -11.5% |
| 1942 | 0.122 | +22.0% |
| 1943 | 0.127 | +4.1% |
| 1944 | 0.158 | +24.4% |
| 1945 | 0.164 | +3.8% |
| 1946 | 0.161 | -1.8% |
| 1947 | 0.161 | +0.0% |
| 1948 | 0.159 | -1.2% |
| 1949 | 0.159 | +0.0% |
| 1950 | 0.156 | -1.9% |
| 1951 | 0.185 | +18.6% |
| 1952 | 0.205 | +10.8% |
| 1953 | 0.118 | -42.4% |
| 1954 | 0.058 | -50.8% |
| 1955 | 0.102 | +75.9% |
| 1956 | 0.057 | -44.1% |
| 1957 | 0.058 | +1.8% |
| 1958 | 0.058 | +0.0% |
| 1959 | 0.058 | +0.0% |
| 1960 | 0.061 | +5.2% |
| 1961 | 0.061 | +0.0% |
| 1962 | 0.06 | -1.6% |
| 1963 | 0.061 | +1.7% |
| 1964 | 0.109 | +78.7% |
| 1965 | 0.11 | +0.9% |
| 1966 | 0.11 | +0.0% |
| 1967 | 0.11 | +0.0% |
| 1968 | 0.111 | +0.9% |
| 1969 | 0.111 | +0.0% |
| 1970 | 0.113 | +1.8% |
| 1971 | 0.113 | +0.0% |
| 1972 | 0.113 | +0.0% |
| 1973 | 0.113 | +0.0% |
| 1974 | 0.113 | +0.0% |
| 1975 | 0.107 | -5.3% |
| 1976 | 0.107 | +0.0% |
| 1977 | 0.107 | +0.0% |
| 1978 | 0.11 | +2.8% |
| 1979 | 0.159 | +44.5% |
| 1980 | 0.167 | +5.0% |
| 1981 | 0.121 | -27.5% |
| 1982 | 0.106 | -12.4% |
| 1983 | 0.104 | -1.9% |
| 1984 | 0.108 | +3.8% |
| 1985 | 0.109 | +0.9% |
| 1986 | 0.109 | +0.0% |
| 1987 | 0.171 | +56.9% |
| 1988 | 0.177 | +3.5% |
| 1989 | 0.168 | -5.1% |
| 1990 | 0.16 | -4.8% |
| 1991 | 0.16 | +0.0% |
| 1992 | 0.159 | -0.6% |
| 1993 | 0.162 | +1.9% |
| 1994 | 0.165 | +1.9% |
| 1995 | 0.165 | +0.0% |
| 1996 | 0.174 | +5.5% |
| 1997 | 0.218 | +25.3% |
| 1998 | 0.231 | +6.0% |
| 1999 | 0.234 | +1.3% |
| 2000 | 0.233 | -0.4% |
| 2001 | 0.234 | +0.4% |
| 2002 | 0.232 | -0.9% |
| 2003 | 0.232 | +0.0% |
| 2004 | 0.207 | -10.8% |
| 2005 | 0.177 | -14.5% |
| 2006 | 0.173 | -2.3% |
| 2007 | 0.173 | +0.0% |
| 2008 | 0.167 | -3.5% |
| 2009 | 0.158 | -5.4% |
| 2010 | 0.144 | -8.9% |
| 2011 | 0.145 | +0.7% |
| 2012 | 0.158 | +9.0% |
| 2013 | 0.174 | +10.1% |
| 2014 | 0.183 | +5.2% |
| 2015 | 0.186 | +1.6% |
| 2016 | 0.186 | +0.0% |
| 2017 | 0.185 | -0.5% |
| 2018 | 0.182 | -1.6% |
| 2019 | 0.181 | -0.5% |
| 2020 | 0.165 | -8.8% |
| 2021 | 0.158 | -4.2% |
| 2022 | 0.148 | -6.3% |
| 2023 | 0.153 | +3.4% |
| 2024 | 0.166 | +8.5% |
| 2025 | 0.159 | -4.2% |
Iran compared with similar countries
- Iran's 0.159 is below the median for upper middle income countries, which is 0.491, 32% of the median. (48 countries reporting)
- Iran's 0.159 is below the median for Middle East, North Africa, Afghanistan & Pakistan, which is 0.187, 85% of the median. (23 countries reporting)
Biggest year-on-year movements
Years where Tax revenue vs. Electoral Democracy Index in Iran changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1906 | +175.9% | 0.029 | 0.08 |
| 1927 | +105.4% | 0.056 | 0.115 |
| 1964 | +78.7% | 0.061 | 0.109 |
| 1955 | +75.9% | 0.058 | 0.102 |
| 1922 | +64.8% | 0.088 | 0.145 |
| 1987 | +56.9% | 0.109 | 0.171 |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1900s | 0.0599 | 0.029 | 0.121 | 10 |
| 1910s | 0.1241 | 0.121 | 0.137 | 10 |
| 1920s | 0.1063 | 0.056 | 0.145 | 10 |
| 1930s | 0.1135 | 0.113 | 0.115 | 10 |
| 1940s | 0.1424 | 0.1 | 0.164 | 10 |
| 1950s | 0.1055 | 0.057 | 0.205 | 10 |
| 1960s | 0.0904 | 0.06 | 0.111 | 10 |
| 1970s | 0.1155 | 0.107 | 0.159 | 10 |
| 1980s | 0.134 | 0.104 | 0.177 | 10 |
| 1990s | 0.1828 | 0.159 | 0.234 | 10 |
| 2000s | 0.1986 | 0.158 | 0.234 | 10 |
| 2010s | 0.1724 | 0.144 | 0.186 | 10 |
| 2020s | 0.1582 | 0.148 | 0.166 | 6 |
Countries ranked near Iran
More economy & growth data for Iran
- Africa's Development Dynamics (AfDD) Table 04 - Annual real GDP 1.48 Percent per annum (2029)
- Africa's Development Dynamics (AfDD) Table 02 - Annual real GDP 2 Percent per annum (2029)
- SDRs holdings, US dollar, annual growth rate 5.43 % change on previous year (2025)
- SDRs holdings, US dollar, per unit of GDP 0.019 units per US$ of GDP (2025)
- SDRs holdings, US dollar, per capita 74.73 units per person (2025)
- SDRs holdings, SDR, annual growth rate 0.3978 % change on previous year (2025)
- SDRs holdings, SDR, per unit of GDP 0.0139 units per US$ of GDP (2025)
- SDRs holdings, SDR, per capita 54.57 units per person (2025)
- IMF holdings of currency, US dollar, annual growth rate 5.01 % change on previous year (2025)
- IMF holdings of currency, US dollar, per unit of GDP 0.0115 units per US$ of GDP (2025)
Frequently asked questions
- What is tax revenue vs. electoral democracy index in Iran?
- Tax revenue vs. electoral democracy index in Iran was 0.159 in 2025, according to V-Dem (2026) – processed by Our World in Data.
- What is the highest tax revenue vs. electoral democracy index recorded in Iran?
- The highest recorded value was 0.234 in 1999.
- What is the lowest tax revenue vs. electoral democracy index recorded in Iran?
- The lowest recorded value was 0.029 in 1900.
- How does Iran rank for tax revenue vs. electoral democracy index?
- Iran ranks 152nd out of 176 countries with data for 2025.
- Is tax revenue vs. electoral democracy index rising or falling in Iran?
- Over the last ten years it is down 14.5%. The long-run trend across the full record is rising.
- Where does this Iran data come from?
- The figures come from V-Dem (2026) – processed by Our World in Data, published as part of Tax revenue vs. Electoral Democracy Index. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 126 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Central estimate of the extent to which political leaders are elected under comprehensive suffrage in free and fair elections, and freedoms of association and expression are guaranteed.