RETROSPECTIVE RATING PLAN A
BASIC PREMIUM RATIOS
LOSS CONVERSION FACTOR = .729
Effective January 1, 2006
| Maximum Premium Ratio: | |
1.05 |
1.10 |
1.15 |
1.20 |
1.25 |
1.30 |
1.35 |
1.40 |
1.45 |
1.50 |
1.60 |
1.70 |
1.80 |
2.00 |
Size
Group | | | | | | | | | | | | | | | |
| 63 | | .907 | .856 | .820 | .791 | .766 | .745 | .725 | .708 | .692 | .677 | .649 | .625 | .602 | .563 |
| 62 | | .902 | .850 | .813 | .783 | .757 | .735 | .715 | .698 | .681 | .666 | .638 | .612 | .590 | .550 |
| 61 | | .897 | .844 | .805 | .774 | .748 | .726 | .705 | .687 | .670 | .654 | .625 | .600 | .577 | .536 |
| 60 | | .892 | .838 | .798 | .766 | .739 | .716 | .695 | .676 | .658 | .642 | .613 | .587 | .563 | .522 |
| 59 | | .888 | .831 | .790 | .758 | .730 | .706 | .684 | .665 | .647 | .630 | .600 | .574 | .550 | .508 |
| 58 | | .883 | .825 | .783 | .749 | .720 | .696 | .674 | .654 | .635 | .618 | .588 | .561 | .537 | .495 |
| 57 | | .878 | .818 | .775 | .740 | .711 | .686 | .663 | .643 | .624 | .607 | .576 | .548 | .524 | .482 |
| 56 | | .872 | .810 | .766 | .731 | .701 | .675 | .652 | .631 | .612 | .594 | .563 | .535 | .511 | .468 |
| 55 | | .865 | .802 | .757 | .721 | .690 | .664 | .640 | .619 | .599 | .582 | .550 | .522 | .497 | .455 |
| 54 | | .858 | .794 | .747 | .710 | .679 | .652 | .628 | .607 | .587 | .569 | .537 | .509 | .484 | .442 |
| 53 | | .851 | .785 | .738 | .700 | .668 | .641 | .616 | .595 | .575 | .556 | .524 | .496 | .471 | .429 |
| 52 | | .843 | .776 | .728 | .690 | .657 | .629 | .605 | .582 | .562 | .544 | .511 | .483 | .458 | .417 |
| 51 | | .836 | .767 | .718 | .679 | .646 | .618 | .592 | .570 | .550 | .531 | .498 | .470 | .446 | .405 |
| 50 | | .828 | .758 | .708 | .668 | .634 | .605 | .580 | .557 | .537 | .518 | .485 | .457 | .432 | .392 |
| 49 | | .821 | .748 | .697 | .656 | .622 | .593 | .567 | .544 | .524 | .505 | .472 | .444 | .419 | .379 |
| 48 | | .813 | .739 | .686 | .645 | .610 | .581 | .555 | .531 | .511 | .492 | .459 | .431 | .406 | .367 |
| 47 | | .804 | .729 | .675 | .633 | .598 | .568 | .542 | .519 | .498 | .479 | .446 | .418 | .394 | .355 |
| 46 | | .796 | .718 | .663 | .620 | .584 | .554 | .528 | .505 | .484 | .465 | .433 | .406 | .382 | .344 |
| 45 | | .787 | .707 | .650 | .607 | .571 | .541 | .514 | .491 | .471 | .452 | .420 | .394 | .371 | .334 |
| 44 | | .778 | .695 | .638 | .594 | .557 | .527 | .501 | .478 | .458 | .440 | .408 | .382 | .360 | .324 |
| 43 | | .768 | .683 | .625 | .580 | .544 | .514 | .488 | .465 | .445 | .427 | .396 | .371 | .349 | .314 |
| 42 | | .758 | .671 | .612 | .567 | .530 | .500 | .474 | .451 | .431 | .413 | .383 | .357 | .336 | .301 |
| 41 | | .748 | .659 | .599 | .554 | .517 | .486 | .460 | .437 | .417 | .399 | .368 | .343 | .322 | .288 |
| 40 | | .737 | .647 | .586 | .540 | .503 | .472 | .446 | .423 | .403 | .385 | .355 | .330 | .309 | .276 |
| 39 | | .726 | .635 | .573 | .526 | .489 | .458 | .432 | .409 | .389 | .372 | .342 | .317 | .296 | .264 |
| 38 | | .714 | .622 | .560 | .513 | .476 | .445 | .418 | .396 | .376 | .359 | .329 | .305 | .284 | .252 |
| 37 | | .702 | .608 | .546 | .499 | .462 | .431 | .405 | .383 | .363 | .346 | .317 | .293 | .273 | .242 |
| 36 | | .688 | .594 | .532 | .485 | .448 | .417 | .392 | .369 | .350 | .333 | .304 | .281 | .262 | .231 |
| 35 | | .673 | .578 | .516 | .469 | .433 | .402 | .377 | .355 | .336 | .320 | .292 | .269 | .250 | .221 |
| 34 | | .657 | .562 | .500 | .454 | .418 | .388 | .363 | .342 | .323 | .307 | .280 | .258 | .240 | .211 |
| 33 | | .640 | .546 | .484 | .439 | .403 | .374 | .349 | .329 | .310 | .295 | .268 | .247 | .229 | .202 |
| 32 | | .623 | .529 | .468 | .424 | .389 | .360 | .336 | .316 | .298 | .283 | .257 | .237 | .220 | .193 |
| 31 | | .607 | .512 | .452 | .408 | .373 | .345 | .322 | .302 | .285 | .270 | .246 | .226 | .210 | .185 |
| 30 | | .589 | .495 | .435 | .392 | .358 | .331 | .308 | .289 | .273 | .259 | .235 | .216 | .201 | .178 |
| 29 | | .571 | .478 | .419 | .377 | .344 | .317 | .295 | .277 | .261 | .247 | .225 | .207 | .193 | .171 |
| 28 | | .553 | .461 | .403 | .361 | .329 | .303 | .282 | .264 | .248 | .235 | .213 | .195 | .181 | .160 |
| 27 | | .537 | .446 | .388 | .346 | .314 | .288 | .267 | .248 | .233 | .219 | .197 | .179 | .165 | .143 |
| 26 | | .521 | .430 | .373 | .331 | .299 | .273 | .252 | .234 | .218 | .205 | .183 | .165 | .151 | .129 |
| 25 | | .504 | .414 | .358 | .317 | .285 | .259 | .238 | .220 | .205 | .192 | .170 | .152 | .138 | .117 |
| 24 | | .482 | .394 | .339 | .300 | .269 | .245 | .225 | .208 | .194 | .181 | .161 | .145 | .132 | .113 |
| 23 | | .460 | .374 | .321 | .283 | .254 | .231 | .213 | .197 | .184 | .172 | .153 | .138 | .127 | .109 |
| 22 | | .437 | .355 | .304 | .268 | .241 | .219 | .201 | .187 | .174 | .163 | .146 | .132 | .121 | .105 |
| 21 | | .414 | .336 | .288 | .254 | .228 | .208 | .191 | .177 | .166 | .156 | .139 | .127 | .117 | .102 |
| 20 | | .394 | .318 | .272 | .239 | .214 | .194 | .179 | .166 | .155 | .145 | .130 | .119 | .110 | .096 |
| 19 | | .377 | .301 | .254 | .222 | .198 | .179 | .164 | .152 | .142 | .133 | .120 | .109 | .101 | .089 |
| 18 | | .358 | .283 | .238 | .207 | .184 | .166 | .152 | .140 | .131 | .123 | .110 | .101 | .094 | .083 |
| 17 | | .339 | .266 | .222 | .192 | .171 | .154 | .140 | .130 | .121 | .114 | .103 | .094 | .088 | .079 |
| 16 | | .320 | .249 | .208 | .179 | .159 | .143 | .131 | .121 | .113 | .106 | .096 | .088 | .083 | .075 |
| 15 | | .303 | .234 | .194 | .168 | .148 | .134 | .122 | .113 | .106 | .100 | .091 | .084 | .079 | .072 |
| 14 | | .293 | .220 | .180 | .157 | .141 | .128 | .117 | .109 | .103 | .097 | .089 | .082 | .078 | .071 |
| 13 | | .281 | .204 | .167 | .148 | .133 | .122 | .112 | .105 | .099 | .094 | .086 | .081 | .076 | .070 |
| 12 | | .269 | .187 | .156 | .139 | .126 | .116 | .108 | .101 | .096 | .091 | .084 | .079 | .075 | .069 |
| 11 | | .254 | .167 | .145 | .130 | .119 | .110 | .103 | .097 | .092 | .088 | .082 | .077 | .073 | .068 |
| 10 | | .238 | .150 | .135 | .122 | .113 | .105 | .098 | .093 | .089 | .085 | .079 | .075 | .072 | .067 |
| 9 | | .219 | .138 | .125 | .115 | .106 | .100 | .094 | .089 | .085 | .082 | .077 | .073 | .071 | .066 |
| 8 | | .197 | .127 | .116 | .107 | .100 | .094 | .090 | .086 | .082 | .079 | .075 | .072 | .069 | .065 |
| 7 | | .170 | .117 | .108 | .100 | .094 | .089 | .085 | .082 | .079 | .077 | .073 | .070 | .068 | .064 |
| 6 | | .137 | .107 | .100 | .094 | .089 | .085 | .081 | .078 | .076 | .074 | .071 | .068 | .066 | .064 |
| 5 | | .105 | .098 | .092 | .087 | .083 | .080 | .077 | .075 | .073 | .071 | .068 | .066 | .065 | .063 |
| 4 | | .096 | .089 | .084 | .081 | .078 | .076 | .074 | .072 | .070 | .068 | .066 | .065 | .064 | .063 |
[Statutory Authority: RCW 51.04.020, 51.16.035, and 51.32.073. 05-23-162, § 296-17-90493, filed 11/22/05, effective 1/1/06. Statutory Authority: RCW 51.04.020, 51.16.035, 51.32.073, and 51.18.010. 03-24-066, § 296-17-90493, filed 12/1/03, effective 1/1/04. Statutory Authority: RCW 51.16.035, 51.32.073, 51.18.010, and 51.04.020(1). 02-24-029, § 296-17-90493, filed 11/27/02, effective 1/1/03. Statutory Authority: RCW 51.04.020, 51.16.035, 51.32.073, 51.18.010. 01-23-061, § 296-17-90493, filed 11/20/01, effective 1/1/02; 00-23-101, § 296-17-90493, filed 11/21/00, effective 1/1/01. Statutory Authority: RCW 51.18.010. 00-11-060, § 296-17-90493, filed 5/12/00, effective 7/1/00.]