Bank Covenants for Australian Construction SMEs: WIP, DSCR and ICR Explained

May 27
8 min read

Why bank covenants make or break AU construction businesses

Construction businesses live and die on credit. Overdraft for working capital. Project-finance facilities for major builds. Equipment loans for plant. Performance bonds for principal contracts. The cost of credit is small relative to the value it unlocks — but the cost of LOSING credit at the wrong moment is catastrophic.

What sits between you and continued credit access is the covenant package. Three or four key tests, run quarterly, embedded in your facility agreement. Pass them and the bank stays out of your way. Breach them and the bank's relationship manager starts asking questions that, in the worst case, end in a facility review and termination.

This guide is the practitioner walkthrough for AU construction SMEs ($2M-$50M revenue). The four covenants that matter most. How they're calculated. How to model them in your management pack. How to spot a breach risk three quarters out instead of one week out.

Built on the framework in the Construction Accounting Australia cornerstone.

The four covenants that matter most for construction SMEs

1. Working capital ratio

Definition: Current assets / current liabilities

Banks want this above 1.0 — typically 1.2 or 1.3 for a healthy construction SME. Below 1.0 means current liabilities exceed current assets — bankers read this as cash-stress signalling.

The construction-specific issue: retention assets and contract assets sit in current assets but their conversion to cash is conditional or delayed. Some banks net retention out of the calculation; some don't. Read the facility agreement carefully.

2. Debt Service Coverage Ratio (DSCR)

Definition: (EBITDA + non-cash adjustments) / Total debt service (principal + interest)

Banks want DSCR above 1.25 typically — meaning EBITDA covers debt service with a 25% buffer. Below 1.25 = the business is generating just enough cash to service debt with no margin for downside.

Construction-specific issue: EBITDA can be lumpy due to large-project recognition timing. A single $5M project closing in Q4 can lift EBITDA materially — and the next-12-month forecast may not have a similar contributor lined up.

3. Interest Coverage Ratio (ICR)

Definition: EBITDA / Interest expense

Banks want ICR above 3.0 typically — EBITDA covers interest expense three times over. Below 2.0 = bank starts asking questions; below 1.5 = facility review territory.

Construction-specific issue: project finance + overdraft interest can creep up if rolling balances stay high. A business growing top-line can deteriorate ICR if cost discipline doesn't keep pace.

4. Single-contract concentration

Definition: Revenue or order book from largest single head contractor / max single contract

Banks want this below 25-30% typically — no single contract or counterparty controls more than ~25% of your revenue. Above that = counterparty risk concentration.

Construction-specific issue: small operators are often heavily concentrated on one Tier 1 head contractor. Diversification takes time.

How banks actually calculate these (the gotchas)

Working capital ratio gotchas

Some banks net retention assets (because conditional) — read your facility agreement Schedule
Contract assets that are unbilled revenue — typically counted, but if older than 90 days some banks discount
Stock / inventory — for builders, often only minor; for materials suppliers, material
Trade payables: include all, including disputed items, until resolved

DSCR gotchas

EBITDA definition in the facility — sometimes "operating EBITDA" excluding gains on disposals
Non-cash adjustments — typically depreciation, amortisation. Some facilities also add back share-based payments
Total debt service — principal repayment + interest. Excludes voluntary prepayments
Trailing 12 months vs forecast — most facilities test on TTM (trailing 12-month) actuals + 12-month forward forecast

ICR gotchas

EBITDA — same definition as DSCR
Interest expense — capitalised interest is sometimes excluded; bank fees and line fees may be included
Off-balance-sheet finance lease interest — varies by facility wording

Single-contract concentration gotchas

Calculated by revenue OR by order book — facility agreement specifies which
Group treatment — multiple contracts with related entities of a head contractor counted as one
Joint ventures — your share of JV revenue counted, not the gross

Worked example — $15M EPC contractor

Sample financials, end of FY26:

Revenue (TTM): $15,200,000
EBITDA (TTM): $1,520,000 (10% margin)
Depreciation + amortisation: $180,000
Interest expense: $310,000
Total debt service (principal + interest): $890,000
Current assets: $4,200,000 (incl. $260,000 retention asset)
Current liabilities: $2,800,000
Largest single contract (HeadCo-A, current year revenue): $4,100,000

Covenant calculations:

Covenant	Calculation	Result	Threshold	Headroom
Working capital ratio (gross)	$4,200k / $2,800k	1.50	≥ 1.20	✅ Comfortable
Working capital ratio (net of retention)	$3,940k / $2,800k	1.41	≥ 1.20	✅ Comfortable
DSCR	$1,520k + $180k = $1,700k / $890k	1.91	≥ 1.25	✅ Comfortable
ICR	$1,520k / $310k	4.90	≥ 3.00	✅ Comfortable
Single-contract concentration	$4,100k / $15,200k	27%	≤ 30%	⚠️ Close to limit

This business is in good covenant shape on three of four — but its concentration is approaching the 30% threshold. A finance lead worth their salt is already presenting a diversification narrative to the bank's relationship manager.

How to structure financials to keep covenants comfortable

Working capital ratio

Pay down trade payables aggressively before period end (boosts current assets : current liabilities ratio at reporting date)
Accelerate AR collection — don't let receivables age past 60 days
Convert retention to cash where milestones allow (chase release on time)
Refinance short-term debt to long-term where structurally sensible (reduces current liabilities)

DSCR

EBITDA quality — recurring revenue from O&M contracts is higher quality than one-off large-project revenue
Defer discretionary capex to periods after covenant test dates if borderline
Negotiate longer amortisation tenors on new facilities (lower principal repayment)
If DSCR is tight, model the next-12-month forward — bankers will look at forward DSCR, not just trailing

ICR

Refinance high-cost short-term debt to lower-cost term debt
Tight overdraft management — only draw when needed, redeposit when cash returns
If line fees + commitment fees are creeping in, consolidate facilities

Single-contract concentration

Active diversification — don't let any single head contractor exceed 30% of revenue or order book
If forced concentration (a large single project running for 18 months), present the concentration risk + mitigation narrative to the bank ahead of time
Joint ventures count proportionally — JV with another sub-contractor can reduce your effective concentration on shared contracts

The monthly covenant tracker

One-page tracker in the management pack, monthly:

Covenant	Current value	Threshold	Trend (3-month)	Forecast next quarter	Status
Working capital ratio	1.50	≥1.20	Stable	1.48	✅
DSCR (TTM)	1.91	≥1.25	Improving	1.95	✅
ICR	4.90	≥3.00	Stable	4.85	✅
Single-contract concentration	27%	≤30%	Increasing ⚠️	29%	⚠️

The 3-month trend column is the early warning indicator. By the time the current value crosses a threshold, you've usually had 2-3 quarters of trend visibility — if anyone was tracking.

The bank narrative — what to send with the pack

When a covenant test or facility review is approaching, send a one-page narrative alongside the management pack. Cover:

Trading update. Period revenue, key project margin commentary, any material variations from forecast.
Project margin tracking. Active projects vs bid margins. Any deterioration? Why?
Cash position vs minimum line. Current cash balance + working capital ratio + 13-week forward forecast.
Single-contract concentration. Current %, trajectory, diversification actions.
Forward order book. Total contracted forward work, by head contractor + by industry.
Covenant compliance. All four tests + result, with TTM and forward forecast.
Any covenant breach risk + mitigation. If a covenant is approaching threshold, state it before the bank does. Present your mitigation plan.

This is the kind of front-running communication that keeps facilities renewing on standard terms instead of triggering reviews.

What to do if you breach a covenant

Things to do in this order, the moment a breach is identified (or forecast):

Document the breach. Specific covenant, specific period, specific calculation. Don't try to spin it or hide it.
Identify the cause. One-off event (large bad debt, lost contract) vs structural (margin compression, sustained cash drag).
Build the mitigation plan. What you'll do in the next 1-2 quarters to bring the metric back into compliance.
Pre-brief the bank. Don't wait for the next quarterly test. Call your relationship manager, send the breach analysis + mitigation plan. Banks vastly prefer to learn this from you before it shows in the financials.
Request a waiver if needed. Banks will often grant a one-period waiver for genuine one-off causes if you've front-run the conversation. Less likely to waive if it's structural.
Execute the mitigation. Monthly reporting of progress against plan.

The worst case is breaching, NOT telling the bank, and the bank discovering it via the quarterly test. That destroys trust and frequently triggers facility review.

Common mistakes builders make on covenants

Mistake 1 — Not knowing the exact covenant definitions

Builder cites their working capital ratio but doesn't realise the facility agreement nets out retention. Their actual reported ratio is materially worse.Fix: Pull the facility agreement. Schedule out every covenant definition exactly. Hand the schedule to the bookkeeper running monthly close.

Mistake 2 — Tracking covenants quarterly, not monthly

Quarterly covenant tests but quarterly tracking means you have one data point per period. No trend visibility.Fix: Monthly tracking, even if formal test is quarterly. Trend data is what gives you 2-3 quarters of warning.

Mistake 3 — Lumpy EBITDA from large-project recognition

Single large project closes in Q4. EBITDA spikes. DSCR looks great. Next 12 months without that contributor = covenant under pressure.Fix: Forecast next 12 months alongside trailing 12. Bankers care more about forward.

Mistake 4 — Single-contract concentration crept up unnoticed

One head contractor's relationship grew from 18% to 35% over 18 months without notice. Bank flagged it during routine review.Fix: Monthly tracker shows concentration trend. Diversification target documented.

Mistake 5 — Breach discovered by the bank, not you

Builder didn't realise EBITDA had compressed enough to put DSCR below 1.25. Bank's quarterly test surfaced it. Bank demanded explanation; builder had none.Fix: Monthly covenant tracker. Builder always knows compliance status. Bank is briefed by builder, not vice versa.

When this becomes a specialist conversation

Most $2M-$10M operators can manage covenants with a competent bookkeeper running the monthly tracker once the facility agreement schedule is set up correctly. Above $10M revenue, or where multiple facilities are in play, Financial Controller tier engagement is the right scope — including the monthly tracker, bank narrative production, and pre-emptive bank communication.

Above $25M revenue or with material capital event approaching (refinance, M&A, IPO), Head of Finance tier ($8,500/month) handles the strategic capital structure work.

TL;DR for the busy founder

Know your four covenants: working capital ratio, DSCR, ICR, single-contract concentration.
Pull your facility agreement. Schedule out the exact definitions.
Monthly tracker — trend visibility gives you 2-3 quarters of warning.
Bank narrative monthly. Don't wait for the bank to ask.
If a breach is forecast, pre-brief the bank. They prefer to hear it from you.
Lumpy EBITDA hides risk. Forecast next 12 months alongside trailing.
Single-contract concentration creeps up unnoticed. Track + diversify.