COEFICIENTES
DE ATUALIZAÇÃO DO CRÉDITO TRIBUTÁRIO
ANO - 1991
| DIA/MÊS | JANEIRO | FEVEREIRO | MARÇO | ABRIL | MAIO | JUNHO |
| 01 | 6.5032428010 | 5.4099000000 | 5.0559813084 | 4.6596899225 | 4.2779535031 | 3.9250526010 |
| 02 | 6.5032428010 | 5.4099000000 | 5.0343383585 | 4.6424954947 | 4.2779535031 | 3.9250526010 |
| 03 | 6.4595157446 | 5.4099000000 | 5.0343383585 | 4.6254274966 | 4.2604347141 | 3.9250526010 |
| 04 | 6.4160848669 | 5.4099000000 | 5.0343383585 | 4.6088771511 | 4.2430588235 | 3.9077578734 |
| 05 | 6.3729441235 | 5.3942566557 | 5.0128799110 | 4.5920550038 | 4.2430588235 | 3.8906148867 |
| 06 | 6.3729441235 | 5.3787035196 | 4.9911430944 | 4.5757421974 | 4.2430588235 | 3.8730670103 |
| 07 | 6.3729441235 | 5.3637715645 | 4.9700505283 | 4.5757421974 | 4.2258240900 | 3.8556767158 |
| 08 | 6.3300993890 | 5.3483934750 | 4.9486827662 | 4.5757421974 | 4.2087288004 | 3.8384418902 |
| 09 | 6.2875331049 | 5.3325776244 | 4.9274979506 | 4.5591606270 | 4.1917712692 | 3.8384418902 |
| 10 | 6.2452626670 | 5.3325776244 | 4.9274979506 | 4.5407923451 | 4.1746276719 | 3.8384418902 |
| 11 | 6.2032708297 | 5.3325776244 | 4.9274979506 | 4.5229495862 | 4.1573042342 | 3.8210905495 |
| 12 | 6.1615577791 | 5.3325776244 | 4.9064937421 | 4.5048713465 | 4.1573042342 | 3.8038953734 |
| 13 | 6.1615577791 | 5.3325776244 | 4.8852266570 | 4.4869370490 | 4.1573042342 | 3.7868542629 |
| 14 | 6.1615577791 | 5.3131997643 | 4.8641431397 | 4.4869370490 | 4.1404408388 | 3.7699651568 |
| 15 | 6.1201345354 | 5.2939622272 | 4.8436744561 | 4.4869370490 | 4.1233993902 | 3.7529656608 |
| 16 | 6.0789845330 | 5.2697253068 | 4.8229473121 | 4.4691449814 | 4.1064976469 | 3.7529656608 |
| 17 | 6.0381079450 | 5.2697253068 | 4.8229473121 | 4.4514934584 | 4.0897338978 | 3.7529656608 |
| 18 | 5.9975101067 | 5.2697253068 | 4.8229473121 | 4.4339808212 | 4.0727998193 | 3.7361187845 |
| 19 | 5.9571856539 | 5.2457092989 | 4.8019705308 | 4.4162448980 | 4.0727998193 | 3.7194224820 |
| 20 | 5.9571856539 | 5.2214072001 | 4.7815980202 | 4.3986502968 | 4.0727998193 | 3.7026213127 |
| 21 | 5.9571856539 | 5.1973292343 | 4.7609786148 | 4.3986502968 | 4.0563095149 | 3.6859712475 |
| 22 | 5.9171294314 | 5.1734723152 | 4.7405362776 | 4.3986502968 | 4.0396505376 | 3.6694702571 |
| 23 | 5.8773465521 | 5.1498334127 | 4.7202687375 | 4.3811953353 | 4.0231278352 | 3.6694702571 |
| 24 | 5.8271255735 | 5.1498334127 | 4.7202687375 | 4.3638783577 | 4.0064430127 | 3.6694702571 |
| 25 | 5.7773324432 | 5.1498334127 | 4.7202687375 | 4.3463485177 | 3.9901902936 | 3.6528696826 |
| 26 | 5.7279623527 | 5.1264095518 | 4.7001737619 | 4.3293053777 | 3.9901902936 | 3.6366630815 |
| 27 | 5.7279623527 | 5.1027164686 | 4.6798442907 | 4.3120516499 | 3.9901902936 | 3.6203573580 |
| 28 | 5.7279623527 | 5.0792413858 | 4.6596899225 | 4.3120516499 | 3.9737769943 | 3.6039570981 |
| 29 | 5.6790153345 | 41.1356485989 | 4.6596899225 | 4.3120516499 | 3.9574981712 | 3.5877047550 |
| 30 | 5.6304912368 | 41.1356485989 | 4.6596899225 | 4.2949349000 | 3.9410650543 | 3.5877047550 |
| 31 | 5.5354647422 | 41.1356485989 | 4.6596899225 | 41.1356485989 | 3.9410650543 | 41.1356485989 |