N.H. Rev. Stat. § 31:4
Towns may at any legal meeting grant and vote such sums of money as they judge necessary for any purpose for which a municipality may act if such appropriation is not prohibited by the laws or by the constitution of this state.
RSA 31:4
1849, 861:1. RS 31:4. CS 32:4. 1862, 2580:3. GS 34:4. 1868, 1:6; 26:1. 1872, 40:1. 1875, 39:1. 1876, 2:1. GL 37:4, 9; 49:10; 50:1. 1883, 69:3. 1889, 7:1; 82:1. PS 40:4. 1891, 1:1. 1895, 29:1. 1897, 23:1. 1899, 13:1, 2; 34:1. 1901, 8:1; 17:1; 54:1. 1905, 18:1. 1909, 73:1. 1911, 81:1; 146:1. 1913, 58:1. 1915, 58:1; 64:1. 1917, 225:1. 1919, 17:1; 41:1. 1923, 27:1, 2. 1925, 11:1. PL 42 :4. 1929, 172:1. 1931, 90:1. 1937, 119:2; 133:101. 1939, 20:1; 51:1; 90:1. 1941, 65:1; 74:1. RL 51:4. 1943, 34:1. 1945, 54:1, 2; 106:1. 1947, 130:1. 1949, 42:1; 59:1; 133:3; 161:1. RSA 31:4. 1957, 85:1; 186:1; 287:1. 1961, 81:1; 168:1. 1963, 90:1. 1965, 8:1; 224:1. 1969, 49:1; 125:1; 247:1; 445:1, 2. 1971, 159:1; 310:1, 336:1. 1973, 582:2. 1974, 15:3, 5. 1975, 2:1; 273:1. 1977, 14:1; 263:1. 1979, 156:1. 1983, 187:1, eff. Aug. 10, 1983.