Stop Losing £15k: How to Catch Supplier Invoice Mistakes Before They Cost You

The 30 Second Summary:

• The average contractor loses £15,000 a year to supplier invoice mistakes, overcharges and missed rebates

• Manual checking is impossible when you're juggling three sites and 47 deliveries a week

• Simply Buying automatically flags pricing errors and tracks every rebate in real time so you keep what you've earned

You're Not Being Overcharged Because Suppliers Are Dodgy

You're being overcharged because you're too busy to check every line on every invoice.

When you're running between sites, dealing with late deliveries and trying to keep three crews moving, who has time to compare this week's plasterboard price against last month's quote? No one. That's the problem.

And the suppliers know it. Not because they're crooked, but because they know you'll just pay the invoice and move on to the next fire that needs putting out.

Here's what that "I'll check it later" habit is costing you.

The Invoice Killers Hiding in Plain Sight

These are the mistakes that drain £15k from your bottom line every year:

• Price Creep: You agreed £42 per sheet. They invoice you at £46. You don't notice because it's only £4 and you've got 200 other things to do.

• The Phantom Pallet: You ordered 18 packs of insulation. They delivered 17. They invoiced you for 18. That's £120 gone.

• Rebate Amnesia: You hit your £80k spend tier in September. The supplier "forgets" to apply your 4% rebate for October and November. That's £3,200 missing.

• The Double Tap: They invoice you twice for the same delivery because it came on two lorries. You pay both because they arrived a week apart and you didn't connect the dots.

• The "Admin Fee" That Wasn't in the Quote: Suddenly there's a £45 charge for weekend delivery that was never mentioned. You pay it because arguing costs more time than it's worth.

Sound familiar? That's because it happens on every single project.

The worst part? You probably know it's happening. You just don't have the hours in the day to hunt through 200 invoices a month looking for the mistakes.

What If Your Invoices Had a Site Manager?

That's basically what Simply Buying does. While you're on site, it's watching the till.

Every quote you get through the system gets stored. Every invoice that comes in gets checked against that quote automatically. If the price has moved, you get flagged before you pay.

No more "I'm sure that's about right" payments. No more overpaying because you're too knackered to do the maths at 7pm on a Friday.

Here's the bit that actually saves you money: Simply Buying tracks your rebates in real time across every supplier. You can see exactly where you are against your tier targets. No more October panic spending. No more "Rebate Prison" where you're locked into another year just to get the payout you've already earned.

The £15k Breakdown (Real Numbers from Real Projects)

Let's say you spend £400k a year on materials across three main suppliers. Here's where the money walks out the door:

Price Creep & Overcharges: £4,800

• Just 1.2% variance across your invoices adds up fast when you're placing 40 orders a month

Missed Rebate Tiers: £6,500

• You think you are getting 5% rebate but you tracked it wrong and only qualify for 3% which is the equivalent of 6 months spend. Problem? You only have 2 months left.

Duplicate Payments & Phantom Deliveries: £2,100

• Two invoices paid for the same materials or paying for items that never turned up

Lost Early Payment Discounts: £1,600

• You qualified for 2% off if you paid within 14 days but you didn't know because the invoice arrived late

Total Annual Loss: £15,000

That's not worst case scenario. That's average.

How It Actually Works (Without Adding to Your Workload)

You're already getting quotes and paying invoices. Simply Buying just makes sure you're not getting rinsed in the process.

Step 1: Request quotes through the system. It goes to the suppliers you choose and they respond as normal.

Step 2: Place an order against the quote. The prices get locked in and stored.

Step 3: When the invoice arrives, Simply Buying checks it against the quote automatically. If there's a variance, you get alerted before you pay.

Step 4: Your rebate & spend tracker updates in real time. You can see your progress across all suppliers & sites so you know exactly where you stand.

No extra admin. No double handling. Just a system that remembers what you were quoted so you don't have to.

You've Already Earned That £15k

The rebates are yours. The agreed prices are yours. The discounts are yours.

Simply Buying just makes sure you actually get them instead of leaving them on the table because you're too stretched to chase every penny.

Start your 30 day free trial and see how much you've been losing. You might be surprised how quickly those "small" overcharges add up to the cost of another crew member.

Because the only thing worse than being overcharged is knowing you were overcharged and doing nothing about it.