Cost of Attendance Transparency Project

COST OF ATTENDANCE PRIMER: The Estimates Behind College Affordability

Executive Summary

Cost of Attendance (COA) is the student budget colleges use to combine tuition and fees with estimated expenses such as housing, food, transportation, books, and other necessities. While tuition and other direct charges are known, much of the remaining college price is constructed from institutional estimates. This primer explains how COA evolved, how its living-cost components are estimated, and how one administrative student budget came to serve multiple purposes—from determining financial aid eligibility to defining published college prices and informing measures of affordability and value.

What the Research Shows

Living expenses make up a substantial—and in some sectors, majority—share of published college budgets. Unlike direct charges, these expenses require institutions to make judgments about data sources, geography, time periods, student circumstances, and what constitutes a reasonable expense. A substantial share of the college price students see may therefore reflect institutional estimates rather than billed charges.

Why It Matters

COA now performs several jobs at once: it represents a student budget, helps determine financial aid eligibility and limits, communicates a published college price, and provides the foundation for measures such as net price and unmet need. An estimate designed to serve one of these purposes may not necessarily serve all of them equally well. Understanding what sits underneath COA is therefore essential to interpreting both the price students see and the broader measures built from it.

Learn more about our findings, insights, and recommendations in the full report.

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Estimating Student Need: Findings from the Cost of Attendance Transparency Project

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Press Release

New Roadmap Charts Bold Path for Equitable Public Higher Education in Massachusetts

COA Report Series

This series will be published in phases as the Reports are released. Please check back for updates.

1

REPORT

COST OF ATTENDANCE PRIMER: The Estimates Behind College Affordability

September 28th, 2026

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Woman working on computer.

2

REPORT

LIVING-COST ESTIMATES: How Published Allowances Compare with Local Costs

Coming Soon

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Students sitting on the lawn.

3

REPORT

STANDARDIZING COLLEGE LIVING-COST ESTIMATES: What Coordination Can and Cannot Solve

Coming Soon

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Woman looking deep in thought.

4

REPORT

APPENDICES & SUPPORTING MATERIALS: Additional Context Here if Applicable to this Report

Coming Soon

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Photo of building exterior.

5

REPORT

POLICY FRAMEWORK: Additional Context Here if Applicable to this Report

Coming Soon

DASHBOARD

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Explore key patterns in college living-cost estimates and interact with data collected from years of research.

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College affordability starts with greater transparency and accuracy in how COA is set. Realistic living costs are crucial—and a high-impact opportunity for change. Subscribe for the latest news.

How You Make an Impact

Support the work: Help build independent evidence on one of college’s largest, least-measured costs.

  • Partner with us: Collaborate on research, policy, pilots, or implementation.

  • Use our work: Strengthen COA accuracy, transparency, accountability, and policy.

  • Amplify and share: Cite and share the research to elevate living costs in affordability conversations.