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Washington State Institute for Public Policy

Benefit-Cost Results

Since the 1990s, the Washington State legislature has directed WSIPP to identify “evidence-based” policies. The goal is to provide Washington policymakers and budget writers with a list of well-researched public policies that can, with a high degree of certainty, lead to better statewide outcomes coupled with a more efficient use of taxpayer dollars.

Research Approach. WSIPP has developed a three-step process to draw conclusions about what works and what does not to achieve particular outcomes of legislative interest. First, we systematically assess all high-quality studies from the United States and elsewhere to identify policy options that have been tested and found to achieve improvements in outcomes. Second, we determine how much it would cost Washington taxpayers to produce the results found in Step 1, and calculate how much it would be worth to people in Washington State to achieve the improved outcome. That is, in dollars and cents terms, we compare the benefits and costs of each policy option. It is important to note that the benefit-cost estimates pertain specifically to Washington State; results will vary from state to state. Third, we assess the risk in the estimates to determine the odds that a particular policy option will at least break even. ...show more

WSIPP acknowledges the MacArthur Foundation and the Pew Charitable Trusts that have helped fund some of the research reported on this page.

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Overview of WSIPP's Benefit-Cost Model

Estimating Program Effects Using Effect Sizes

For details on our benefit-cost methods, contact Heather Grob or download our Technical Documentation.

Latest Results. The tables on this webpage present our current findings for a variety of public policy topics. Items on these tables are updated periodically as new information becomes available. Interested readers can find more information by clicking each entry in the tables.

Use the search fields below to find specific benefit-cost results that match certain criteria. If you want to find other information on our website that is not benefit-cost results, you can use the search field in the navigation bar at the top, or click here to search the entire website.

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Benefit-cost methods last updated December 2024

Current estimates replace old estimates. Numbers will change over time as a result of model inputs and monetization methods.

Found 134 BC Results
Research Area Program name
(click on the program name for more detail)
Date of last literature review
Total benefits
Taxpayer benefits
Non-taxpayer benefits
Costs
Benefits minus costs (net present value)
Benefit to cost ratio
Chance benefits will exceed costs
Juvenile Justice Jul. 2019 ($2,399) ($579) ($1,819) ($172) ($2,571) ($13.93) 41%
Juvenile Justice Jul. 2019 $19,178 $4,175 $15,003 ($366) $18,813 $52.44 68%
Juvenile Justice Jun. 2019 $57,230 $12,054 $45,176 ($1,761) $55,469 $32.49 93%
Juvenile Justice Feb. 2019 $29,695 $8,165 $21,529 ($3,535) $26,160 $8.40 99%
Juvenile Justice Aug. 2019 $21,658 $5,350 $16,308 ($4,814) $16,844 $4.50 74%
Juvenile Justice Jun. 2023 $1,618 $1,011 $607 ($4,749) ($3,130) $0.34 42%
Juvenile Justice Mar. 2019 $172,020 $39,547 $132,474 ($9,196) $162,824 $18.71 100%
Juvenile Justice May. 2019 $29,617 $8,374 $21,243 ($9,849) $19,768 $3.01 99%
Juvenile Justice Feb. 2019 $17,097 $5,281 $11,816 ($14,622) $2,475 $1.17 54%
Juvenile Justice May. 2019 $26,618 $9,817 $16,801 ($17,200) $9,418 $1.55 60%
Juvenile Justice May. 2019 $15,687 $5,197 $10,490 ($9,972) $5,715 $1.57 59%
Juvenile Justice Jul. 2019 $47,380 $12,374 $35,006 ($3,483) $43,897 $13.60 92%
Juvenile Justice Jul. 2019 $36,472 $8,847 $27,626 $3,220 $39,693 n/a 100%
Juvenile Justice Jun. 2019 $17,471 $9,013 $8,458 ($29,748) ($12,276) $0.59 25%
Juvenile Justice Jul. 2019 $10,838 $3,077 $7,761 ($2,609) $8,229 $4.15 82%
Juvenile Justice Jul. 2019 ($2,084) ($289) ($1,795) ($972) ($3,056) ($2.14) 44%
Adult Criminal Justice Jan. 2017 $6,842 $1,947 $4,895 $83 $6,925 n/a 60%
Adult Criminal Justice Nov. 2016 $10,668 $3,222 $7,446 $467 $11,135 n/a 98%
Adult Criminal Justice Nov. 2016 $5,693 $1,365 $4,329 ($472) $5,222 $12.07 57%
Adult Criminal Justice Nov. 2016 $18,569 $3,874 $14,695 ($4,787) $13,782 $3.88 88%
Adult Criminal Justice Sep. 2024 $5,160 $1,216 $3,944 ($1,379) $3,781 $3.74 67%
Adult Criminal Justice Dec. 2016 $7,127 $2,449 $4,678 ($1,709) $5,419 $4.17 95%
Adult Criminal Justice May. 2024 $4,975 $1,461 $3,514 $0 $4,975 n/a 96%
Adult Criminal Justice Aug. 2016 $42,941 $13,148 $29,793 ($2,980) $39,961 $14.41 87%
Adult Criminal Justice Aug. 2016 $367 $482 ($114) ($2,406) ($2,038) $0.15 20%
Adult Criminal Justice Aug. 2016 $6,812 $3,047 $3,764 ($6,556) $255 $1.04 50%
Adult Criminal Justice Dec. 2016 $8,919 $2,888 $6,031 ($995) $7,924 $8.97 100%
Adult Criminal Justice Jul. 2024 $3,943 $1,210 $2,732 ($357) $3,586 $11.04 72%
Adult Criminal Justice Dec. 2016 $7,262 $2,491 $4,771 ($1,679) $5,583 $4.33 97%
Adult Criminal Justice Aug. 2016 $17,810 $7,869 $9,942 ($17,715) $95 $1.01 51%
Adult Criminal Justice Nov. 2016 ($1,447) ($228) ($1,220) ($429) ($1,876) ($3.38) 30%
Child Welfare Aug. 2017 $34,938 $12,831 $22,106 ($2,002) $32,936 $17.46 95%
Children's Mental Health Aug. 2017 $5,033 $1,470 $3,563 $424 $5,457 n/a 84%
Children's Mental Health Aug. 2017 $182 $142 $40 ($735) ($553) $0.25 49%
Children's Mental Health Jul. 2018 $4,062 $1,156 $2,906 ($2,056) $2,006 $1.98 55%
Children's Mental Health May. 2018 $2,265 $846 $1,419 $40 $2,304 n/a 79%
Children's Mental Health Aug. 2017 $35 $101 ($65) ($539) ($503) $0.07 48%
Children's Mental Health Apr. 2018 ($3,642) ($587) ($3,055) ($1,213) ($4,855) ($3.00) 47%
Children's Mental Health Aug. 2017 $31,253 $9,841 $21,413 $131 $31,384 n/a 100%
Children's Mental Health Aug. 2017 $2,152 $1,197 $954 ($185) $1,967 $11.62 51%
Children's Mental Health Jun. 2018 $9,213 $2,782 $6,431 $733 $9,946 n/a 82%
Children's Mental Health May. 2018 $14,439 $4,705 $9,735 ($538) $13,902 $26.86 95%
Children's Mental Health Jul. 2018 $5,126 $1,732 $3,394 $702 $5,827 n/a 98%
Children's Mental Health Apr. 2018 $7,273 $3,116 $4,157 ($4,723) $2,550 $1.54 56%
Children's Mental Health Jul. 2018 $13,675 $3,361 $10,315 ($1,940) $11,735 $7.05 57%
Children's Mental Health May. 2018 $6,204 $1,802 $4,403 $645 $6,850 n/a 92%
Children's Mental Health Jun. 2018 $1,417 $991 $426 ($2,449) ($1,032) $0.58 29%
Children's Mental Health Jul. 2018 $21,001 $6,336 $14,665 ($4,980) $16,021 $4.22 85%
Healthcare Nov. 2015 $199 $144 $55 ($34) $165 $5.92 84%
Healthcare Nov. 2015 $187 $0 $187 ($34) $153 $5.56 84%
Healthcare Jan. 2018 $830 $168 $662 ($409) $421 $2.03 88%
Healthcare Jan. 2018 $10,006 $1,320 $8,685 ($1,188) $8,818 $8.42 100%
Healthcare Jan. 2018 ($658) $12 ($671) ($1,430) ($2,089) ($0.46) 22%
Substance Use Disorders Sep. 2016 $8,000 $1,657 $6,343 ($324) $7,676 $24.66 56%
Substance Use Disorders Dec. 2016 ($577) ($40) ($537) ($659) ($1,236) ($0.88) 49%
Substance Use Disorders Jun. 2016 ($1,501) $35 ($1,536) ($4,231) ($5,732) ($0.35) 37%
Substance Use Disorders May. 2015 $2,878 $2,103 $775 ($9,860) ($6,982) $0.29 29%
Substance Use Disorders Sep. 2018 $11 $27 ($16) ($133) ($122) $0.08 50%
Adult Mental Health Sep. 2016 $32,704 $9,922 $22,781 ($532) $32,171 $61.42 85%
Adult Mental Health Sep. 2016 $1,548 $1,137 $411 ($857) $691 $1.81 48%
Adult Mental Health Sep. 2016 $47,670 $14,451 $33,219 ($705) $46,965 $67.65 100%
Adult Mental Health Sep. 2016 $35,885 $10,934 $24,951 ($619) $35,267 $58.01 100%
Adult Mental Health Sep. 2016 $70,472 $21,932 $48,540 ($691) $69,780 $101.97 100%
Adult Mental Health Sep. 2016 $58,731 $18,211 $40,520 ($86) $58,644 $681.66 100%
Adult Mental Health Sep. 2016 ($316) $389 ($705) ($1,986) ($2,301) ($0.16) 42%
Public Health & Prevention Mar. 2018 $1,197 $3,232 ($2,035) ($1,115) $82 $1.07 50%
Public Health & Prevention Aug. 2017 $10,557 $3,298 $7,259 ($560) $9,997 $18.87 81%
Public Health & Prevention Aug. 2017 $7,208 $6,363 $845 ($48,430) ($41,221) $0.15 22%
Public Health & Prevention Nov. 2015 ($150) $1 ($151) ($307) ($457) ($0.49) 45%
Public Health & Prevention Jun. 2019 $3,213 $1,002 $2,211 ($77) $3,136 $41.70 70%
Public Health & Prevention Nov. 2015 ($15) $0 ($15) ($31) ($46) ($0.48) 49%
Public Health & Prevention Jan. 2018 $11,383 $3,537 $7,846 ($756) $10,626 $15.05 73%
Public Health & Prevention Aug. 2018 $4,021 $1,237 $2,784 ($677) $3,344 $5.94 60%
Workforce Development Dec. 2016 $19,726 $5,637 $14,089 ($6,790) $12,936 $2.91 87%
Workforce Development Nov. 2015 $2,785 $1,709 $1,076 ($638) $2,147 $4.36 65%
Higher Education Jul. 2017 $371 $137 $234 ($1,063) ($692) $0.35 19%
Higher Education Jul. 2017 $247 $72 $175 ($467) ($219) $0.53 38%
Higher Education Jan. 2018 $4,826 $942 $3,884 ($12) $4,814 $416.91 59%

Other topics reviewed; benefit-cost results not yet available:

Research Area Program name
(click on the program name for more detail)
Date of last literature review Notes
Public Health & Prevention
Athletes Training and Learning to Avoid Steroids (ATLAS)
Jun. 2016 Click for meta-analytic results
Child Welfare
Attachment and Biobehavioral Catch-up
Nov. 2017 Click for meta-analytic results
Public Health & Prevention
Behavioral Monitoring and Reinforcement Program (BMRP)
Feb. 2020 Click for meta-analytic results
Children's Mental Health
Choice Theory/Reality Therapy for children with disruptive behavior
Jul. 2018 Click for meta-analytic results
Adult Mental Health
Cognitive behavioral therapy (CBT) for prodromal psychosis
Sep. 2016 Click for meta-analytic results
Substance Use Disorders
Community Reinforcement and Family Training (CRAFT) for engaging clients in treatment
Sep. 2016 Click for meta-analytic results
Healthcare
Cost sharing: (a) High-Deductible Health Plans (moderate to high deductibles, with and without HRAs or HSAs), general patient population
Nov. 2015 Click for meta-analytic results
Healthcare
Cost sharing: (e) High-Deductible Health Plans with higher deductibles (individual > $1000) and HRA accounts, general patient population
Nov. 2015 Click for meta-analytic results
Healthcare
Cost sharing: (f) High-Deductible Health Plans with higher deductibles (individual > $1000) and HSA accounts, general patient population
Nov. 2015 Click for meta-analytic results
Healthcare
Cost sharing: (i) Copay increases across multiple services, low-income and chronically-ill population
Nov. 2015 Click for meta-analytic results
Adult Criminal Justice
Dialectical behavior therapy
Sep. 2015 Click for meta-analytic results
Higher Education
Early commitment programs (for middle and high school students)
Dec. 2016 Click for meta-analytic results
Juvenile Justice
Functional Family Therapy (FFT) for post-release youth convicted of a sex offense
Jul. 2019 Click for meta-analytic results
Child Welfare
Functional Family Therapy—Child Welfare (FFT-CW)
Sep. 2017 Click for meta-analytic results
Adult Mental Health
Individual Placement and Support for first episode psychosis
Aug. 2017 Click for meta-analytic results
Child Welfare
Multisystemic Therapy (MST) for child abuse and neglect
Aug. 2017 Click for meta-analytic results
Children's Mental Health
Multisystemic Therapy (MST) for youth with serious emotional disturbance (SED)
Jul. 2018 Click for meta-analytic results
Higher Education
Need-based grants (for high school students and graduates)
Dec. 2017 Click for meta-analytic results
Adult Criminal Justice
Parenting programs (for incarcerated parents)
Aug. 2016 Click for meta-analytic results
Public Health & Prevention
Resources, Education, and Care in the Home (REACH-Futures)
Jun. 2018 Click for meta-analytic results
Higher Education
Tuition sticker price increase at 2-year college (for high school students and graduates)
Aug. 2017 Click for meta-analytic results
Higher Education
Tuition sticker price increase at 4-year college (for high school students and graduates)
Aug. 2017 Click for meta-analytic results
Click to expand

Archive Results:

Research Area Program name
(click on the program name for more detail)
Date of last literature review Archived Date Type of Analysis
Substance Use Disorders May. 2014 Dec. 2024 Benefit-cost
Substance Use Disorders May. 2014 Dec. 2024 Benefit-cost
Substance Use Disorders May. 2014 Dec. 2024 Benefit-cost
Substance Use Disorders May. 2014 Dec. 2024 Benefit-cost
Adult Mental Health Dec. 2014 Dec. 2024 Benefit-cost
Adult Mental Health May. 2014 Dec. 2024 Benefit-cost
Public Health & Prevention Dec. 2014 Dec. 2024 Benefit-cost
Pre-K to 12 Education Jun. 2014 Dec. 2024 Meta-analysis Only
Substance Use Disorders
Behavioral Couples Therapy (marital) ARCHIVED
May. 2014 Dec. 2024 No rigorous evaluation measuring outcome of interest
Substance Use Disorders May. 2014 Dec. 2024 Meta-analysis Only
Substance Use Disorders May. 2014 Dec. 2024 Meta-analysis Only
Substance Use Disorders May. 2014 Dec. 2024 Meta-analysis Only
Adult Mental Health
Forensic Integrative Re-entry Support and Treatment (FIRST) ARCHIVED
May. 2014 Dec. 2024 No rigorous evaluation measuring outcome of interest
Public Health & Prevention
Hip-hop 2 prevent substance abuse and HIV ARCHIVED
Dec. 2014 Dec. 2024 No rigorous evaluation measuring outcome of interest
Public Health & Prevention
Lead and Seed ARCHIVED
Dec. 2014 Dec. 2024 No rigorous evaluation measuring outcome of interest
Public Health & Prevention
Tobacco and Alcohol Prevention Program ARCHIVED
Dec. 2014 Dec. 2024 No rigorous evaluation measuring outcome of interest