Form 8923 – Mine Rescue Team Training Credit Guide

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Here is the part that surprises people about Form 8923: the credit it computes no longer exists for new years. The Mine Rescue Team Training Credit under IRC §45N lapsed for tax years beginning after December 31, 2017, and nothing since has revived it. The form survives only for amended returns on still-open pre-2018 years and for carryforwards moving to Form 3800.

Where the window is still open, the math is the lesser of 20% of qualified training costs or $10,000 per qualified employee, figured per year. A qualified employee is a full-time underground miner eligible to serve on the rescue team for more than 6 months who met the MSHA benchmarks, and a tidy packet of payroll matched to training logs is what separates a clean credit from one that falls apart in review.

Key Takeaways

• The Mine Rescue Team Training Credit under I.R.C. §45N equals the lesser of 20% of qualified training costs or 10,000 per qualified employee, computed per year.
• Qualified training costs can include wages paid while attending training, using the FUTA definition of wages under §3306(b) without the FUTA dollar cap.
• A qualified employee is a full‑time underground miner who was eligible to serve on the rescue team for more than 6 months during the tax year and who met MSHA training benchmarks.
• MSHA benchmarks include an initial 20‑hour course and, after that, refresher training, which is at least 40 hours annually for metal and nonmetal mines and 96 hours annually for coal mines, by regulation.
• Congress let §45N lapse for tax years beginning after December 31, 2017. You can still file for open years and include the credit in your Form 3800 general business credit calculation when applicable.

What Form 8923 Is And Why It Matters

Form 8923 is the IRS form employers use to compute and claim the Mine Rescue Team Training Credit. If you employ individuals as miners in a U.S. underground mine and you paid or incurred training program costs for qualified rescue team employees in an eligible year, this form is your starting point. You will complete it for the year the costs were incurred and keep it with your records, then flow the credit onto Form 3800, which is the form that actually attaches to your return.

At its core, §45N lets you claim up to 10,000 per qualified employee, limited to 20% of eligible training program costs. The statute explicitly includes wages while attending training, and it points you to §3306(b) for the wage definition, applied without the FUTA dollar limitation. That language often helps reconcile payroll reports with the credit calculation, since you do not stop at the FUTA wage base for this purpose.

Important Status Update For 2025 Planning

The credit itself is not available for tax years beginning after December 31, 2017. If you have training costs in 2022, 2023, 2024, or 2025 tax years, §45N no longer applies. The most recent IRS “About Form 8923” page, reviewed October 24, 2025, reiterates the last extension covered tax years beginning before 2018, which aligns with the termination clause in the statute. This means your action item today is to review open years prior to that cut‑off and evaluate whether an amended return can still capture the credit, though in practice the §6511 refund window for the latest eligible years has generally closed.

If you are a CPA firm supporting mining clients, this is a classic check‑the‑files task. Confirm the year the training occurred, the return status for that year, and whether the refund statute is still open based on the filing date and payments made. You will bring the credit onto Form 3800 and apply standard general business credit ordering and carry rules.

Who Can Claim, In Plain Terms

You can claim the credit if you are an employer of miners working in U.S. underground mines and you incurred eligible training costs for employees who satisfy the §45N(b) definition of a qualified mine rescue team employee. That definition has three parts you need to confirm for each person you include:

• Full‑time employee status with you, the taxpayer.
• A miner who was eligible to serve on a mine rescue team for more than 6 months during the tax year.
• MSHA training benchmark satisfied, either by completing the initial 20‑hour course or meeting the annual refresher requirement.

For the training benchmarks, match the mine type to the relevant MSHA rule. Metal and nonmetal mines fall under 30 CFR 49.8, which requires an initial 20‑hour course and at least 40 hours of annual refresher training. Underground coal mines fall under 30 CFR 49.18, which requires the same initial 20 hours, then at least 96 hours of annual refresher training with specific content and cadence.

A Quick Word On Tone, Scope, And Help

This guide is written for tax managers at mining companies, controllers at underground operations, and CPA firms that support them. It aims to be practical and precise. It is not legal or tax advice for your facts. Always confirm the credit status and the year in question before investing time in a claim. For current IRS references, start with the IRS “About Form 8923” page and the statute at 26 U.S.C. §45N.

If your firm is buried in prior‑year cleanups and documentation prep, trained extra hands help. Accountably places trained offshore accountants and tax preparers inside your firm, ramped on your software and SOPs, and that work can include assembling the training, payroll, and MSHA records that support a Form 8923 claim for open years. Use this when you lack internal capacity, keep your sign‑offs, and work inside your systems. Mentioning us here is simply to give you a viable workflow option, not a sales pitch.

Who Counts As A Qualified Employee

The §45N definition is specific. You must be able to prove that each person you include is, for the tax year at issue, a full‑time employee who is a miner, eligible to serve on your mine rescue team for more than six months, and who has satisfied MSHA training.

Full‑Time Underground Miner Status

Confirm that payroll flags the worker as full‑time, not seasonal or contractor. Confirm that their job assignment places them in underground mining operations in the United States. Tie this to duty rosters or scheduling logs, not only an HR title. If the employee transferred mid‑year, document the dates. This level of detail saves time in an exam, because it shows your count is more than a rough estimate.

Rescue Team Eligibility For More Than Six Months

Eligibility to serve matters, not simply participation in a single drill. Keep team rosters with effective dates, and keep any appointment letters or internal memos that show the period of service eligibility. If someone joined in March and remained eligible through year end, you have more than six months, provided training benchmarks are met.

MSHA Training Benchmarks, Metal/Nonmetal And Coal

MSHA sets two related training frameworks.

• Metal and nonmetal mines, 30 CFR 49.8, require the initial 20‑hour course, then at least 40 hours of refresher training each year, structured monthly or every two months.
• Underground coal mines, 30 CFR 49.18, require the same 20‑hour initial course, then 96 hours of annual refresher training with required elements, such as contests and covered‑mine sessions.

MSHA rules say each member must complete an initial 20‑hour course before serving on a team, then complete the required annual refresher training. Keep proof of both.

If your mine rescue team members meet the coal standard, they exceed the 40‑hour threshold in the statute. That is fine. Your focus is matching the MSHA requirement for your mine type and proving completion.

What Costs Count

The statute lets you include training program costs, including wages paid while the employee attends training. The wage definition references §3306(b), which is the FUTA wage definition, and it applies without the dollar limitation in that section. In practice, that means you do not stop counting at the FUTA wage base when determining the training wage amount.

Wages Under FUTA, In Practice

Section 3306(b) defines wages broadly as all remuneration for employment, with listed exclusions and the familiar FUTA wage base concept. For §45N, Congress instructs you to use the definition but ignore the dollar limitation. So, for training wages, you include the full wages paid while attending training. Those wages roll into total qualified training costs, and the credit is then computed at the form level as the smaller of 20% of those total costs or $10,000 multiplied by the number of qualified employees. Keep gross wage details, training timesheets, and proof that the employee was in training at those times.

Eligible Versus Ineligible Costs

Include:

• Gross wages for hours in training that meet MSHA rules.
• Employer paid training fees, materials, and instructor costs if paid for the program the employee attended, when tied to the employee’s participation and the tax year.
• Travel or per diem amounts treated as wages, consistent with §3306(b), where applicable.

Exclude:

• Non‑wage reimbursements that do not qualify under §3306(b).
• Costs in a different tax year than the training.
• Wages for workers who did not meet the qualified employee standard in §45N(b).

Credit Math At A Glance

The rules compress into a simple grid you can share with your controller or reviewer.

Item	Rule
Basis	Form level (smaller of line 2 or line 3)
Rate	20% of qualified training costs
Maximum credit	10,000 per employee, per year
Wage definition	§3306(b) wages, without FUTA wage base limit
Employee criteria	Full‑time underground miner, eligible to serve more than 6 months, MSHA training satisfied
Code section	I.R.C. §45N
Form	Form 8923, then Form 3800 if needed

This is the framework you will use in the step‑by‑step example that follows.

How To Calculate The Credit

You will compute the credit at the form level: the smaller of 20% of total qualified training costs (line 2) or $10,000 multiplied by the number of qualified employees (line 3).

Step‑By‑Step

• Confirm the employee is qualified under §45N(b) for the tax year.
• Gather training program costs paid or incurred in that year, including wages while attending training.
• Apply the 20% rate to the total qualified training costs across all qualified employees.
• Cap the result at 10,000 per employee (one cap per employee for the tax year, even if that employee completed both the initial 20-hour course and a refresher in the same year).
• Sum across all qualified employees for your Form 8923 total.

Example Calculation

Assume three qualified employees for a tax year beginning on or before December 31, 2017. Your records show the following per person:

Employee	Training Wages	Other Eligible Training Costs	Total Qualified Costs
A	36,000	3,000	39,000
B	49,000	4,000	53,000
C	55,000	2,000	57,000
Total			149,000

Line 2 applies the 20% rate to total qualified costs ($149,000 × 20% = $29,800). Line 3 is $10,000 multiplied by the 3 qualified employees, or $30,000. Line 4 is the smaller of line 2 or line 3, so the total credit for the year on Form 8923 would be $29,800. You would then address general business credit limitations and ordering on Form 3800 if applicable.

Filing Mechanics

• Prepare Form 8923 for the applicable tax year, retain it with your supporting schedules, and attach Form 3800 (which carries the credit) to your return. The IRS “About Form 8923” page links to the current revision, which remains the October 2008 version because §45N has not been amended, and notes recent developments.
• If general business credit limitations apply, complete Form 3800, using standard ordering and carry rules. The current instructions explain carrybacks, carryforwards, and the first‑in, first‑out usage order.

Carrybacks, Carryforwards, And Open Years

The credit is part of the general business credit regime. If your §45N amount is limited in the year earned, you generally carry back the unused credit 1 year and carry forward 20 years, subject to the usual rules and exceptions noted in the Form 3800 instructions and Internal Revenue Manual guidance. Use the ordering rules, apply earliest credits first, and attach the required statements for carry movements.

Practical tip, check refund statutes before you invest time. If an original return omitted the credit for a tax year beginning before 2018, you may still be able to amend depending on when the return was filed and the payment history, though in practice the §6511 refund window for the latest eligible years has usually closed, so confirm your statute before investing time. Align your analysis with your normal statute controls and document your dates.

Reconciliation Checklist

Before you press file, reconcile:

• Form 8923 totals to payroll and training detail by employee.
• MSHA certificates and logs to dates on your eligibility schedule.
• General ledger postings for training vendors to the amounts you included.
• Form 3800 entries to the credit amount and any carry movements you claim.

Keep your computation in a single tab that shows training wages, other eligible costs, the 20% rate, and the 10,000 per-employee ceiling. It makes reviewer sign‑off faster and makes exams calmer.

Documentation And Audit Readiness

Auditors usually ask for two things first, proof the person is qualified and proof the costs tie to training in the claimed year. Organize your packet with that sequence in mind.

Documentation Checklist

Document	Why It Matters
Rescue team roster with effective dates	Proves more than six months of eligibility in the tax year.
MSHA 20‑hour initial course certificate	Establishes baseline qualification.
Annual refresher proof, 40 hours or 96 hours	Matches 30 CFR 49.8 for metal/nonmetal or 49.18 for coal.
Training calendars, attendance logs	Ties wages to training dates and hours.
Payroll detail for training days	Supports §3306(b) wage amounts used in the calc.
Vendor invoices for training costs	Connects other eligible costs to the program and year.
Internal memo on employee status	Confirms full‑time underground miner role.
Form 8923 workpaper and tie‑out	Shows math, caps, and totals.
Form 3800 schedules, if used	Shows limitation, carryback, or carryforward.

Common Mistakes To Avoid

• Counting workers who are not full‑time miners or who were not eligible for more than six months.
• Using the FUTA wage base as a ceiling for training wages. §45N tells you to ignore the dollar limitation in §3306(b).
• Missing the MSHA standard for your mine type. Coal mines follow 49.18, not 49.8, and require 96 hours of annual refresher training.
• Claiming costs in the wrong tax year or without tying them to training.
• Forgetting to run the credit through Form 3800 when limitations apply.

Recent Developments, Plainly Stated

• The IRS page reflects that the credit terminated for tax years beginning after December 31, 2017. No later extension has been enacted. The statute’s termination clause confirms that §45N does not apply to taxable years beginning after December 31, 2017, and no later legislation, including the One Big Beautiful Bill Act of July 2025, has revived it.
• MSHA’s training pages and CFR references remain current for 2025 and clarify the refresher hour differences between mine types.

For Accounting Firms Supporting Mining Clients

If you are a CPA or CAS leader with clients who run underground operations, you may have to pull training logs from operations, reconcile payroll to rosters, and assemble a Form 8923 packet for an open year. This is production work that benefits from standard operating procedures, consistent workpapers, and a clean review layer. If you lack capacity, a structured offshore delivery model can help your team focus on review and advising while maintaining control of workpapers and timelines. At Accountably, we integrate trained offshore teams into your workflow so you keep your templates, your systems, and your review discipline intact. Use this sparingly, when it truly saves your staff from late nights in peak season.

Goal, proof first, math second, then forms. That rhythm keeps you in control and cuts review time.

Quick Reference

One‑Page Workflow

• Confirm year is within eligibility window.
• Build qualified employee list with dates and MSHA proof.
• Pull payroll for training dates, compute eligible wages under §3306(b).
• Add other eligible training costs, then apply the 20% rate to the total qualified costs.
• Carry the smaller of 20% of total costs (line 2) or $10,000 times the number of employees (line 3) as the Form 8923 credit (line 4).
• Complete Form 3800 if limitations apply and check carry rules.

Documentation Table You Can Copy

Section	What To Attach
Eligibility	Team roster with dates, FT status proof, underground assignment records
Training	20‑hour course certificates, annual refresher logs per 49.8 or 49.18
Payroll	Gross wages for training dates, allocation notes, reconciliation to GL
Costs	Vendor invoices for training programs tied to attendees and dates
Forms	Form 8923 calc, tie‑out to return, Form 3800 schedules if used

Closing

You are closer than you think. Form 8923 is a focused calculation, and the statute is specific about who qualifies and which costs count. If you build your packet in the order an auditor reviews it, you will move quickly, avoid rework, and either file cleanly today or amend a prior year with confidence. When you need extra hands to produce clean workpapers inside your systems, consider a controlled offshore delivery approach so your in‑house team can stay on review and advisory work.

Common Mistakes We See Every Season

The same handful of errors shows up every time a mining client pulls an old §45N claim back out of the drawer. Here is what my team flags first.

Reusable Checklists

These are copy-paste ready for your firm SOP. Drop them into your engagement workpapers so a §45N review runs the same way every time.

Keep 8923 Season From Stalling

Unlike a quarterly or April filing, §45N work does not run on a calendar. The Mine Rescue Team Training Credit terminated for tax years beginning after December 31, 2017 (IRC §45N(e)), and the form itself has not been revised since its October 2008 version (Form 8923, Rev. October 2008). So the pressure today is not volume, it is precision: reconstructing payroll and training records for a closed year and racing a statute-of-limitations window that has already shut for most originating claims.

That makes a §45N engagement a documentation problem before it is a math problem. The teams that recover these credits cleanly triage eligibility first, then build the workpaper once and defend it, rather than chasing scattered training logs after the return is half-drafted.

• Run an open-year scan before booking time: confirm the training year, the §6511 refund window, and whether you are claiming an original amount or a carryforward into a year still open under §6501.
• Reconcile payroll to MSHA training logs so the line 2 training-wage figure ties to the initial 20-hour course or the 40-hour refresher you are relying on.
• Compute line 4 as the smaller of line 2 or line 3 (line 1 times $10,000), then reduce the related deduction by the credit under IRC §280C(e).
• For pass-through clients, report the credit on Schedule K and let partners or shareholders carry it to Form 3800, rather than filing Form 3800 at the entity level.

This is exactly the kind of low-frequency, high-documentation work that stalls when senior reviewers are buried in current-season filings. Our tax preparation team builds the eligibility scan, the records packet, and the Form 3800 handoff into a repeatable workpaper, so a niche credit gets handled without pulling your reviewers off the returns in front of them.

FAQs

Is Form 8923 still available for new training done in 2022 or later?

No. §45N does not apply to taxable years beginning after December 31, 2017. Training costs in later years do not qualify. You may still file for open years that began before 2018 if your statute allows.

What proof do I need that an employee is “qualified”?

Keep evidence of full‑time underground miner status, eligibility to serve on the rescue team for more than six months, and MSHA training proof, either the initial 20‑hour course or the annual refresher standard that applies to your mine type.

Do I include wages paid during training even if the employee already exceeded the FUTA wage base?

Yes. For §45N, use the §3306(b) definition of wages without the FUTA dollar limitation. Do not stop at the FUTA wage base when counting training wages.

Where does Form 8923 flow on the return?

You compute the credit on Form 8923 for the applicable year. If you are subject to general business credit limitations, you carry it to Form 3800. Follow the ordering, limitation, and carry rules in the current instructions.

Can I carry unused §45N credit to other years?

Yes, if you earned it in an eligible year and it is limited, the general carry rules normally apply, generally a 1‑year carryback and a 20‑year carryforward. Always confirm the current Form 3800 instructions and attach required statements for carry movements.