The practical answer

Choose a small set of unresolved purchasing questions, use a controlled synthetic dataset and define observable results before the pilot. Have the employer's operators perform the work, retain evidence and distinguish passed, failed and untested requirements.

A proof of concept should resolve uncertainty about the employer's operating model without becoming an unplanned full implementation. This guide focuses on the path from data handoff through review, output and support. Detailed form treatment must be established using the applicable official instructions before evaluating whether the software handles it correctly.

Choose the decisions the pilot must support

Start with the open items in the RFP. Select a few questions that materially affect the purchase: whether the employer can provide a usable source export, whether reviewers can understand exceptions, whether output evidence is retrievable, and whether the proposed support handoff works.

Write a passing result for each question before seeing the demonstration. For example, the assigned operator imports the agreed sample and explains every rejected row using an exported exception report. This is more observable than the statement that the product is easy to use.

State what is outside the pilot, including actual agency transmission unless separately authorized and deliberately included. Publication 5165 distinguishes filing outcomes from local preparation; a successful preview should not be described as IRS acceptance.

Prepare a small synthetic dataset with known facts

Illustrative twenty-employee pilot dataset
GroupEmployee aliasesPurpose
Stable baseline12Ordinary data handoff and review.
Midyear changes4Visible effective-date and monthly differences.
Separate employment episodes2Identity review across source records.
Applicable covered-person cases2Person-specific enrollment handling.

The groups total 12 + 4 + 2 + 2 = 20 fictional employee identities. Assign them across two synthetic employer entities and provide a reviewed twelve-month fact sheet for each. That gives 240 employee-month positions to organize, without implying that every form field requires a value in every month.

Use vendor-approved test identities and keep the expected reporting treatment separate from the raw facts. The 2025 instructions provide the current final C-series context used for this guide. Do not use real client data merely to make an early purchasing demonstration feel realistic.

Run the workflow with the employer's operators

Have the source owner deliver the agreed sample, the assigned operator import it and the reporting reviewer inspect the resulting preview. Ask the vendor to guide only as the proposed service model allows. Record when vendor assistance is necessary so the pilot reflects the workflow being purchased.

Introduce one controlled source revision and one deliberately unresolved row. Observe the update, exception and review handoffs. Then generate the intended output and retrieve a review packet that identifies the employer, year and version. Use clearly labelled simulated outcome evidence if agency follow-up is part of the demonstration.

Prepare an agreed synthetic support case containing a reproducible problem and the evidence the vendor requests. Observe how it is routed and what information comes back. A polite response alone does not establish that the operational question was resolved.

Use an acceptance record that distinguishes observations

For each criterion, save the expected result, actual result, evidence, operator and environment. Use explicit statuses such as passed, failed, untested or conditional under the employer's chosen method. These are pilot labels, not IRS statuses.

A condition might be a documented manual step the employer has agreed to evaluate further. It should identify the dependency and responsible person. Do not use conditional as a way to hide an essential requirement that the product has not demonstrated.

Separate a product limitation from a dataset or configuration mistake. If the expected result depended on a source fact that was never supplied, correct the test setup and rerun it. Preserve the first observation so the final report explains why the result changed.

Worked example: six passes do not close eight criteria

Fictional example: Cobalt Garden Services defines eight pilot criteria. Six pass with retained evidence, one fails because the review export omits the source version, and one remains untested because the designated support contact was unavailable. The result is 6 + 1 + 1 = 8 criteria, not an unqualified successful pilot.

The missing version matters because the employer cannot connect its approval to a specific source snapshot outside the product screen. The team asks for a focused export retest. It separately schedules the support handoff demonstration rather than inferring success from unrelated tasks.

After the retest, the decision record should state the actual new results and any accepted manual procedure. It should not claim that a previously untested process was exercised unless the team actually performed it and retained the relevant evidence.

Carry findings into implementation and effort estimates

Document the dataset, product version, configuration, assistance and acceptance results used for the decision. Convert accepted procedures into implementation tasks and unresolved requirements into explicit conditions. The implementation plan should preserve those dependencies.

Record observed task effort, but distinguish it from a complete annual workload estimate. A twenty-employee synthetic pilot does not capture every source dispute, seasonal support demand or historical correction. Use the observations to improve the cost model while retaining uncertainty for work the pilot did not cover.

Finish by deciding whether the evidence supports selection, another focused test or a different operating model. Archive the synthetic data and outputs according to the agreed evaluation process. A bounded pilot is useful when it produces a specific decision and an honest record of its limits.

A bounded pilot resolves specific purchasing questions

A bounded pilot resolves specific purchasing questions: Choose unresolved criteria; Run a controlled sample; Observe the full handoff; Decide and transfer
Illustrative proof of concept. Local previews and simulated outcomes are not actual IRS filing results.
Read the workflow as text
  1. Choose unresolved criteria. Define the expected result and evidence for each purchasing question.
  2. Run a controlled sample. Use twenty synthetic employees with reviewed facts across two employers.
  3. Observe the full handoff. Have operators import, review, retrieve output and exercise agreed support.
  4. Decide and transfer. Record actual results, retest gaps and carry accepted procedures into implementation.

Put this guide to work

ACA software proof-of-concept pilot and acceptance plan

Save the editable text worksheet and use it with your own records. Keep completed copies in your secure working files.

Download the worksheet TXT

Common questions

How many employees should a pilot include?

Use enough synthetic cases to answer the selected questions while keeping review manageable. The twenty-employee example is illustrative. Case diversity and known expected results matter more than a large row count.

Should the vendor perform every task during the pilot?

Have the employer's operators perform the work they would own under the proposed service model. Record vendor assistance where it is part of that model or needed to proceed. A vendor-only demonstration does not prove that your team can repeat the task.

Can we call a criterion passed if it was explained but not tested?

Describe the explanation as evidence of a claim or proposed procedure. If the criterion requires an observed task, keep it untested until that task occurs. Do not convert discussion into a completed demonstration.

Does the pilot need to transmit returns?

Not necessarily. A bounded purchasing pilot can use previews and explicitly simulated outcomes. Actual transmission requires an intentionally scoped, authorized filing process and should not happen merely because a sample reached the end of a demo.

What should happen to a failed criterion?

Identify the cause, required correction or alternative procedure, and a focused retest. Preserve the earlier observation and the new evidence. Essential requirements should remain visible in the final decision even when other criteria pass.

Official sources and scope

Sources checked September 5, 2026. Use the edition for the tax year and filing method you are working with; later instructions may change thresholds, fields, or procedures.

  1. IRS 2025 Instructions for Forms 1094-C and 1095-C

    Reporting context for establishing expected treatment in synthetic C-series cases.

  2. IRS Publication 5165, revised December 2025

    Distinction between local preparation and actual AIR filing outcomes.