# Cashflow finance for tradies — overdrafts, invoice finance and working capital

> A plain-English guide to tradie cashflow finance — overdrafts, invoice finance and working capital, when each fits, what they cost, and the traps to dodge.

Source: https://tradiefinance.co.nz/guides/tradie-cashflow-finance-guide
Published: 2026-06-09T08:00:00.000Z
Updated: 2026-06-09T08:00:00.000Z
Category: cashflow
Tags: cashflow, overdraft, invoice-finance, working-capital, guide
Image: https://tradiefinance.co.nz/images/resources/generated/tradie/guide/tradie-cashflow-finance-guide-primary.jpg
Image alt: Invoices, materials and a tablet representing Cashflow finance for tradies — overdrafts, invoice finance and working capital


TL;DR: The classic tradie cashflow gap is fronting materials and wages now, then waiting 30–60 days for the invoice. Match the tool to the gap — an overdraft for short, lumpy timing dips, invoice finance to unlock money stuck in unpaid invoices, a short working-capital facility for a one-off hit, and a supplier account for materials. The cardinal sin is funding long-term things on short-term money.

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Every tradie knows this feeling. The job's done, it went well, and you're still skint. You fronted the materials, you paid the lads on Friday, and the invoice won't clear for another five or six weeks. The work is profitable — the *timing* is the problem.

That gap between doing the work and getting paid is the single biggest cashflow killer for a Kiwi trade business. This guide walks through the tools that bridge it — [business overdraft](/glossary/business-overdraft), [invoice finance](/glossary/invoice-finance), short-term [working-capital](/glossary/working-capital) facilities and supplier accounts — when each one fits, roughly what it costs, and the trap that quietly sinks otherwise-good businesses.

## The cashflow gap, in plain numbers

Picture a sparkie running a small commercial fit-out. The numbers below are illustrative, but the shape will feel familiar:

| What happens | When | Cash effect |
|---|---|---|
| Order materials, pay supplier (or 20th-of-month account) | Week 1 | −$18,000 |
| Pay wages across the job | Weeks 1–4 | −$12,000 |
| Issue the invoice | Week 4 | $0 (no cash yet) |
| Client pays on 30-day terms (often more like 45–60) | Week 8–9 | +$42,000 |

The job makes good money. But for roughly two months you're **$30,000 out of pocket** before a cent comes back. Multiply that across three or four jobs running at once and you can be profitable on paper and unable to make payroll. That's a cashflow problem, not a profit problem — and the fix is a cashflow tool, not a bigger asset loan.

<Callout variant="info" title="Cashflow vs profit — know which one is biting">

Profit is whether the job made money once everything's in. Cashflow is whether you've got money in the account *today*. A healthy business can have a cashflow crunch (timing); a sick one has a profit problem (the jobs aren't priced to cover their costs). Cashflow finance fixes timing. It can't fix under-pricing — if the overdraft never clears, that's the tell.

</Callout>

## Tool 1 — the business overdraft

An overdraft is a revolving facility on your business transaction account. You draw on it when the balance goes negative, up to an agreed limit, and you only pay interest on what you've actually used, for the days you've used it.

**Where it fits:** lumpy, unpredictable, short-term timing gaps. The classic — covering wages and materials this fortnight while last month's invoices land. You dip in, the invoices clear, you bounce back to zero.

**What to watch:**

- **Rates are typically higher than secured asset finance.** Going past your limit (unauthorised overdraft) is dearer again, often with fees on top.
- **It's "on demand."** A lender can review or trim the limit, usually at renewal. It isn't committed term funding you can bank on for years.
- **It's easy to live in.** An overdraft that never returns to zero has quietly become long-term debt at short-term-facility pricing — a sign the real issue is structural.

For a deeper head-to-head on when an overdraft beats buying gear on finance, see [asset finance vs bank overdraft](/guides/asset-finance-vs-bank-overdraft).

## Tool 2 — invoice finance

[Invoice finance](/glossary/invoice-finance) (sometimes called debtor finance or factoring) advances you most of the value of an invoice the day you raise it, instead of you waiting 30–60 days for the client to pay. When the client pays, you get the rest, minus a fee.

**Where it fits:** you do bigger jobs for slower-paying clients — main contractors, councils, commercial builders — and your cash is forever tied up in a stack of legitimate, unpaid invoices. Invoice finance turns that paper into cash now.

**Roughly how it works:**

| Step | What happens |
|---|---|
| You raise a $40,000 invoice | The financier advances, say, ~80–90% — about $32,000–$36,000 — within a day or two |
| Client pays the $40,000 (weeks later) | You receive the held-back balance |
| The financier takes its fee | Typically a small percentage of the invoice plus a usage/discount charge for the days it was outstanding |

The exact advance rate and fees vary by provider and by how creditworthy your customers are — your broker sorts the structure, and these numbers are illustrative, not an offer. The key point: it scales with your sales. Win more work, more invoices, more available cash — without renegotiating a fixed limit every time.

<Callout variant="tip" title="Invoice finance suits who you bill, not how big you are">

It works best when your customers are solid payers who are simply *slow* — big builders, government, established firms. If you mostly do cash jobs for homeowners who pay on the spot, you don't have an invoice-timing problem and this isn't your tool. For the full picture, read [invoice finance vs waiting to get paid](/blog/invoice-finance-vs-waiting-to-get-paid).

</Callout>

## Tool 3 — short-term working-capital facilities

Sometimes the gap isn't a constant dribble (overdraft territory) or a stack of invoices (invoice-finance territory) — it's a single, known, one-off hit. A big materials order to land a contract. A quiet quarter you can see coming. A tax bill. GST due before the matching income arrives.

A short-term [working-capital](/glossary/working-capital) loan — sometimes a [term loan](/glossary/term-loan) over 6–24 months — gives you a lump sum with a fixed repayment so you can plan around it. Because it has a defined end date, it forces the debt to actually clear, unlike an overdraft you can quietly live in forever.

**Where it fits:**

- A one-off, sized, short-life need with a clear path to repayment.
- Bridging a known seasonal trough (see [managing seasonal cashflow as a tradie](/guides/managing-seasonal-cashflow-as-a-tradie)).
- Smoothing a lumpy GST or provisional tax bill — talk to your accountant about timing first.

**What to watch:** match the term to the *life of the need*. A three-month cash gap shouldn't be on a three-year loan, or you'll be paying for last summer's quiet patch well into the future.

## Tool 4 — trade and supplier accounts

The cheapest cashflow tool is often the one you already have. Most building merchants and trade suppliers offer **30-day (20th-of-the-following-month) accounts** — you take the materials now and pay later, usually interest-free if you pay on time. That alone can cover a big chunk of the gap on a typical job.

**Where it fits:** the materials side of nearly every job. Used well, a supplier account pushes your single biggest up-front cost out past when you start getting paid.

**What to watch:**

- **Pay on time.** Late payment fees and the risk of being put on stop-credit (no materials until you clear it) defeat the purpose.
- **It's still credit.** Suppliers can register a [security interest on the PPSR](/glossary/security-interest-ppsr) over goods supplied on account, and many ask a director for a [personal guarantee](/glossary/personal-guarantee). Read what you sign.
- **Don't confuse it for free money.** Stacking supplier debt across several merchants while invoices stay unpaid is the same cashflow hole wearing a different hat.

## The cardinal sin — long-term things on short-term money

This is the mistake that does the real damage, so it gets its own section.

Short-term cashflow tools are for short-term gaps. The moment you use them to buy something that earns over *years* — a ute, a digger, a workshop fit-out — the structure breaks. A $60,000 truck funded on the overdraft never gets paid down; it just sits there racking up interest at overdraft rates while the limit creeps toward the ceiling.

<PullQuote>

If it'll still be earning for you in three years, it shouldn't be funded on money you're meant to repay in three months.

</PullQuote>

The reverse is just as costly: don't fund this week's wages on a five-year [chattel mortgage](/glossary/chattel-mortgage). You'd be paying for one fortnight's payroll until the next decade.

The clean rule:

- **Buys a thing that earns for years?** → asset finance (chattel mortgage, [hire purchase](/glossary/hire-purchase)), term matched to the asset's working life.
- **Bridges a short-term timing gap?** → overdraft, invoice finance, or a short working-capital facility.

Most established trade businesses run *both*, side by side — asset finance for the gear, a cashflow tool for the timing. That's healthy. The warning sign isn't using both; it's the overdraft that stops returning to zero.

## Matching the tool to the gap

Quick reference for the four tools and where each one earns its keep:

| The gap you've got | Best-fit tool | Why it fits | Main watch-out |
|---|---|---|---|
| Lumpy, unpredictable, in-and-out timing | Business overdraft | Pay interest only on what you draw | Don't live in it permanently |
| Cash tied up in big, slow-paying invoices | Invoice finance | Unlocks cash the day you bill; scales with sales | Customers must be reliable payers |
| A single, known, one-off hit | Short-term working-capital / term loan | Fixed repayment forces the debt to clear | Match term to the need's life |
| The materials cost on a job | Trade / supplier account | Often interest-free for 30 days | Pay on time; it's still credit |
| A ute, plant, or fit-out (earns for years) | Asset finance — *not* a cashflow tool | Term matched to the asset | Never fund this on the overdraft |

## A worked example — picking the right mix

A plumbing company has three things landing at once this quarter. The numbers are illustrative.

1. A **steady $15,000 in-and-out swing** as weekly wages go out and homeowner invoices trickle in.
2. **$70,000 tied up** in two large invoices to a main contractor on 45-day terms.
3. A **$25,000 materials order** to start a new commercial job, with the supplier offering a 20th-of-month account.

The right structure:

| Need | Right tool | What it costs you, roughly |
|---|---|---|
| $15k weekly swing | Overdraft | Interest only on the days you're actually in it |
| $70k in slow invoices | Invoice finance | Advance most of it now; a fee per invoice when the contractor pays |
| $25k materials | Supplier account | Likely interest-free if paid by the 20th of the following month |

Three different gaps, three different tools, none of them an asset loan. Run it the wrong way around — the materials on the overdraft, the invoices left to sit, a term loan for the weekly swing — and you'd pay more, clear nothing, and still be tight when the next job lands.

<Callout variant="warn" title="Genuine business purpose">

These are business-finance tools. Genuine business-purpose finance sits largely outside the consumer affordability regime (the CCCFA), and you'll usually sign a [business-purpose declaration](/glossary/business-purpose-declaration) confirming the borrowing is for your trade, not personal use. Borrowing as a company can change how it's structured — talk it through with us and your accountant before you commit.

</Callout>

## Getting your cashflow finance-ready

The faster, cheaper outcomes go to tradies whose books make the timing legible to a lender. A few habits do most of the heavy lifting:

- **Invoice the day the job's done** — every day's delay is a day longer in the gap.
- **Tighten your payment terms and chase early.** Quietly drifting from 30 to 60 days is a self-inflicted cashflow wound.
- **Keep your records current** — up-to-date accounting, GST returns filed if you're [GST-registered](/glossary/gst-registration), an [NZBN](/glossary/nzbn) on your paperwork. Tidy books get quicker answers.
- **Know your numbers** before you ask — how big the gap is, how long, and what clears it.

Because TradieFinance is a broker, not a lender, we place your situation across a panel of lenders and match the tool to the actual gap, rather than selling you whatever one bank happens to offer.

## The bottom line

Cashflow finance isn't about borrowing more — it's about bridging the gap between doing the work and getting paid, with the *right* tool for the *shape* of the gap. Overdraft for the lumpy timing. Invoice finance for cash stuck in unpaid bills. A short working-capital facility for a known one-off. A supplier account for the materials. And never, ever, a long-term asset on short-term money.

If you'd like a hand mapping your actual gaps to the right mix — and checking the tax timing with your accountant — that's exactly the kind of call we do every day. [Book a call](/book-a-call) and talk it through with a real broker before you sign anything, or head to our [help centre](/help) if you've got a quick question first.