Government Unit Cost of Output

What Is Unit Cost of Output?

Unit Cost of Output is the total expenditure incurred by a government agency to produce one unit of its defined output. It answers a deceptively simple question: "How much does it cost this agency to issue one license, conduct one inspection, or train one person?"

For example, if a licensing office spends 24 million THB per year and issues 12,000 licenses, its unit cost is 2,000 THB per license. This figure tells auditors and budget planners whether the agency is operating efficiently — and whether efficiency is improving or declining year over year.

Why Must Government Agencies Calculate Unit Cost?

Calculating unit cost is not optional — it is mandated by multiple laws and regulations:

Legal Basis	Key Requirement
Fiscal Discipline Act B.E. 2561 (2018), Section 15	Agencies must maintain fiscal discipline, including tracking the cost-effectiveness of their spending
Cabinet Resolution, September 18, 2012	All government agencies must calculate and report unit cost of output annually
Comptroller General's Department Guidelines	Provides the official methodology, cost classification, and reporting templates
State Audit Office (SAO)	Uses unit cost data for value-for-money audits and performance evaluations

Beyond compliance, calculating unit cost also helps agencies with:

• Benchmarking — comparing cost efficiency across similar agencies or across fiscal years
• Budget justification — providing evidence-based data when requesting annual budget allocations
• Process improvement — identifying which outputs have abnormally high costs and investigating root causes
• Transparency — demonstrating to the public and oversight bodies that taxpayer money is well spent

Cost Components — Direct vs. Indirect

To calculate unit cost accurately, you must first classify all costs into two categories. This classification follows the same principles used in manufacturing cost accounting, adapted for the public sector:

Type	Definition	Examples
Direct Costs	Costs that can be traced directly to a specific output	Staff salaries (operational), materials & supplies, travel expenses, contracted services for that output
Indirect Costs	Costs shared across multiple outputs that must be allocated	Management salaries, utilities (electricity, water), building depreciation, IT maintenance, office supplies

The 6-Step Calculation Process

Step 1: Define Outputs and Measurement Units

Start by clearly defining what your agency produces and how to measure it. Each output must have a countable unit:

Agency	Output	Measurement Unit
Land Office	Land title registrations	Registrations
Dept. of Provincial Administration	National ID card issuance	Cards issued
Training Institute	Training courses delivered	Courses (or person-courses)
Dept. of Highways	Road construction & maintenance	Kilometers
Public Hospital	Outpatient services	Patient visits

Step 2: Collect All Costs (Accrual Basis)

Gather every cost incurred during the fiscal year on an accrual basis — meaning costs are recognized when incurred, not when cash is paid. This includes salaries, materials, utilities, depreciation, and all other operating expenses. Your chart of accounts should be structured to support this classification.

Step 3: Classify Costs as Direct or Indirect

Review each cost line and determine whether it can be traced directly to a specific output (direct) or must be shared across multiple outputs (indirect). This step requires careful judgment — a salary is direct if the person works exclusively on one output, but indirect if they serve multiple outputs.

Step 4: Allocate Indirect Costs

Choose an appropriate allocation base to distribute indirect costs to each output. The choice of base should reflect the actual driver of cost consumption:

Allocation Base	When to Use	Example
Full-Time Equivalents (FTE)	When staff count is the main cost driver	Output A has 20 FTE, Output B has 30 FTE — allocate 40% and 60%
Work Hours	When different outputs require different amounts of labor time	Timesheet data showing hours spent per output
Floor Area	For allocating building-related costs (utilities, depreciation, cleaning)	Output A uses 200 sq.m., Output B uses 300 sq.m.
Direct Cost Ratio	When no better basis is available — allocate proportionally to direct costs	If Output A has 60% of direct costs, it gets 60% of indirect costs

Step 5: Calculate Unit Cost

Once direct and allocated indirect costs are combined for each output, divide by the number of output units:

Step 6: Analyze and Report

Compare your unit cost against previous years, against peer agencies, and against targets. Investigate significant increases or decreases. Prepare the annual unit cost report per the Comptroller General's template and submit it to the relevant oversight bodies.

Real Examples — Comparing Two Agencies

Year-over-Year Comparison — Tracking Efficiency

The real value of unit cost data emerges when you compare it across years:

Metric	FY 2023	FY 2024	FY 2025	Trend
Licenses issued	10,000	11,000	12,000	+20%
Total cost (million THB)	23.0	23.5	24.0	+4.3%
Unit cost (THB/license)	2,300	2,136	2,000	-13% (improved)

This agency increased output by 20% while costs rose only 4.3% — resulting in a 13% improvement in unit cost. This is exactly the kind of data that the State Audit Office looks for during value-for-money audits.

Common Problems Agencies Face

Despite clear guidelines, many agencies struggle with unit cost calculation. Here are the most frequent issues:

Problem	Impact
Scattered data across departments	Budget, accounting, and operations each maintain separate records — reconciliation is time-consuming and error-prone
No time tracking by output	Staff work on multiple outputs but there is no system to log hours per output — making FTE-based allocation guesswork
Missing depreciation	Fixed assets (buildings, vehicles, equipment) are not depreciated or not allocated, resulting in understated unit costs
Changing allocation bases	Using different allocation methods each year makes year-over-year comparison meaningless
Excel dependency	Calculations done in spreadsheets by one or two staff members — when they transfer or retire, institutional knowledge is lost

How ERP Solves These Problems

An ERP system addresses every one of these challenges by providing a single, integrated platform for financial and operational data:

Requirement	How ERP Handles It
Centralized data	All financial transactions — budget, expenses, payroll, procurement — flow into one database with a unified chart of accounts
Chart of accounts by output	Cost centers and activity codes can be structured to map directly to defined outputs — enabling direct cost tracking at the transaction level
Automatic cost allocation	Indirect costs are allocated automatically at period-end using predefined bases (FTE, hours, area) — no manual spreadsheet work
Automatic depreciation	Fixed assets are depreciated automatically each period and allocated to the correct outputs — nothing is missed
Comparison reports	Unit cost reports with year-over-year trends, variance analysis, and drill-down to transaction-level detail — generated in seconds
Audit trail	Every transaction, allocation, and adjustment is logged with user, timestamp, and source document — ready for SAO audits

Unit cost is not just a number for compliance — it is a mirror that reflects how efficiently an agency converts public resources into public services. An ERP system ensures that mirror is clear, consistent, and always up to date.

— Saeree ERP Team

Summary — 6 Things Every Agency Must Do

#	Action	Key Point
1	Define outputs clearly	Each output must have a measurable, countable unit
2	Collect all costs on accrual basis	Include depreciation, personnel costs, and shared services
3	Classify direct vs. indirect	Be consistent — use the same classification year after year
4	Choose and stick to allocation bases	Changing methods each year destroys comparability
5	Calculate and report annually	Use the Comptroller General's official template
6	Analyze trends and take action	A rising unit cost is a signal to investigate — not just a number to report

References

1. Comptroller General's Department, Ministry of Finance — Guidelines for Calculating Unit Cost of Output for Government Agencies
2. State Audit Office of Thailand — Value-for-Money Audit Standards and Guidelines
3. Royal Gazette — Fiscal Discipline Act B.E. 2561 (2018)

If your agency is looking for a system that can automate unit cost calculation, integrate with GFMIS, and generate audit-ready reports, you can schedule a free demo or contact our consulting team to discuss your requirements.