Product · eAuctions
Auction software for procurement teams
Nine formats. One set of rules, fixed before anyone bids.
Auction software runs a live, timed event where invited suppliers compete on price. Proconomy ships nine auction formats, alongside RFQ, RFP and RFI. You choose the format, the price limits and the clock. The system enforces them, and records every bid as it lands.
- Direction
- Reverse
- Format
- English · open, downward
- Lots
- 1 · priced per unit
- Currency
- One per lot · everyone bids in it
- Start price
- The most a bid may be
- Floor
- Bids below it are refused
- Minimum decrement
- How far each bid must beat the best
- Proxy bidding
- Allowed · supplier sets their own limit
- Extension trigger
- Late bid inside the window moves the clock
- Extensions allowed
- Capped at the number you set
- Bid landed
- Inside the trigger window
- End time
- Pushed out by the amount you set
- Bidders told
- Every one, every time
- Extensions used
- 2 of the 3 you allowed
Nine of them. The category decides which, not the tool.
Same negotiation. Email, or a clock.
Most price negotiation happens one supplier at a time, over days. An auction does it at once, in an hour.
The formats
Nine auction formats. Eight can start an event.
The ninth is a best-and-final round you launch after an event closes. Pick by what the category needs, not by what the tool has.
An open downward auction. Everyone sees the current best price and their own rank, and each bid must beat the best by at least your minimum decrement. Use it when the specification is clear and several suppliers can do the work.
The same as English, except suppliers see only their rank and never a price. Each bidder improves on their own last bid. Use it when you want competition without showing the market where the price has landed.
One blind submission per lot. No rank, no price, and a second bid is refused. Use it when you want a single best offer with no bidding dynamics, or the category is thin.
The price drops by a fixed step at a fixed interval, and the first supplier to accept wins that lot at the clock price. Use it when you need a fast result from a supplier willing to commit.
The price falls round by round and every supplier must confirm they will still supply at that level or they are out. Use it when you want to see exactly where each supplier stops. One lot per event.
Suppliers bid a quantity and a unit price, and you award across several of them until the quantity is filled. Use it when you want dual or multi-sourcing on one item.
Ranking is on a composite score: price plus weighted quality, delivery and service. The weights are yours and must total 100. Read the note below this table before you use it.
An open upward auction where the highest bid wins and bids below your reserve are refused. Use it for scrap, surplus and asset disposal. No purchase order is raised for a forward event.
A sealed follow-up round for suppliers you select, launched from a closed event that has no awards yet. Each must beat their own earlier bid. One per event.
Where this already runs
In operations like yours. Not vendor scenarios.
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Nine stages. Two of them are yours alone.
Setup and the award are human decisions. The clock, the bid checks and the notices run on their own.
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01
Human
You build the event
Start from a template, from scratch, from a closed RFQ or from an approved requisition. Set the lots, the quantities, the currency, the start price and the floor.
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02
Human
You set the rules
Minimum decrement, whether proxy bidding is allowed, how far the clock extends when a late bid lands, and how many times it may extend. These are fixed once the event opens.
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03
System
Suppliers are invited
Invited suppliers get an in-app notice and an email when you open the event, then reminders before bidding starts and before it closes. Suppliers who are blocked or inactive cannot be invited at all.
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04
Human
Suppliers accept and agree the terms
Each supplier signs in, accepts the invitation and ticks your bidding terms. The exact wording they agreed to is saved with the time they agreed it.
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05
Rule
Bidding opens and every bid is checked
A bid below your floor is refused. A bid that does not beat the best by your decrement is refused. An opening bid above your start price is refused. Each refusal tells the supplier exactly which rule it broke.
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06
Rule
Late bids extend the clock
A bid inside your trigger window pushes the end time out by the amount you set, up to the number of times you allow. Every extension is recorded and every bidder is told.
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07
Human
You close, or the clock does
The event ends at the time you set, or you close it early. You can also pause it and resume, and the paused time is added back.
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08
Human
You award
Award a lot to one supplier, split a quantity across several, or award the whole event to one supplier on their total. A person always decides, except on the Dutch and Japanese clocks, where the rule decides.
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09
System
The paperwork starts itself, on one path
Award every lot one by one on a reverse event and the purchase orders are raised for you and emailed to the winners. Tick the contract option and a draft contract is created too. Other award routes open a pre-filled form for you to finish.
Core capabilities
What auction software has to get right.
Rules the server enforces
Every bid is checked against your limits, and a refusal says which rule it broke
- A bid below the floor, above the start price, or short of the decrement is refused outright
- No soft warnings, and nothing is rounded to fit
- The supplier sees the exact rule and the exact number it had to beat
Anti-sniping extensions
A last-second bid moves the clock instead of winning on timing
- Set the trigger window, how long each extension adds, and how many are allowed
- Every bidder is told, and each extension is on the record
- You can also extend the clock by hand while the event runs
Proxy bidding
A supplier sets their limit and the system bids for them, never past it
- On by default, bidding one decrement at a time and stopping at the supplier’s limit
- In rank-only it steps from their own last bid, so the leader’s price is never revealed
- If two suppliers set the same limit, the one who set it first holds the lead
Control over what suppliers see
Rank, rank and price, or nothing at all
- The format decides it, not a setting someone can forget
- English shows the best price and their rank; rank-only shows rank alone; sealed shows nothing
- No supplier ever sees who else is bidding — questions show other bidders as a number
Guest bidders and a practice event
Test the format first, and invite a supplier who has no account yet
- Invite a supplier by email as a guest, without a full vendor record
- Guest access runs on a password link and ends a week after award
- A practice event shows suppliers a demo banner and copies into a real draft
Terms captured as they stood
The exact text a supplier agreed to, saved with the time
- A supplier cannot bid until they tick your bidding terms
- The wording is stored as it stood at that moment, not as a link to a document
- If a supplier later disputes what they agreed to, the answer is on the record
Bid history and reports
Every bid, in order, with its timestamp
- The lot report carries the full bid history, in order, with timestamps
- It flags when several bidders have been bidding from the same address
- A supplier report shows savings, activity and win rate; both export to PDF and Excel
An advisory recommendation, never a decision
Ask for a suggested winner, then decide yourself
- After the close, ask for a suggested winner weighed against quality, risk and compliance
- It arrives with a written explanation, and it never ranks the live event
- Override it and the reason is captured — the award is always a person’s
Features
Auction software that holds its own rules.
Five groups of features, and not one of them depends on someone remembering the policy.
Automatic bid control
Your limits are enforced on the server, on every bid, without anyone watching.
- Every bid tested against your floor, your start price and your minimum decrement
- A refused bid names the rule it broke and the number it had to beat
- Proxy bidding steps on a supplier’s behalf and stops at their own limit
- A late bid inside your trigger window moves the clock instead of winning on timing
- An event can be paused and resumed, and the paused time is added back
Advanced auction strategies
Nine formats, so the event matches the category instead of the other way round.
- Eight formats can open an event; a best-and-final round runs after one closes
- English and rank-only for open competition, with or without showing the price
- Dutch and Japanese clocks when you want a visible stopping point
- Sealed bid for a single blind offer with no bidding dynamics
- Split quantity when you mean to award across more than one supplier
Control what the market sees
Set by the format, not by a toggle someone can forget.
- Rank and price, rank alone, or nothing at all, depending on the format
- No supplier ever sees who else is bidding — questions show others as a number
- Guest bidders can be invited by email without a full vendor record
- A practice event lets suppliers rehearse the format, with nothing awardable
- Bidding terms are stored as the wording stood, with the time each supplier agreed
Award once, paperwork follows
A person decides, and the order and the contract are raised from that decision.
- Award a lot outright, split a quantity across suppliers, or award on the total
- Lot-by-lot award on a reverse event raises the purchase orders and emails the winners
- A draft contract can be created on the same action
- An advisory recommendation weighs price against risk and compliance, with a written reason
- Overriding that recommendation keeps the reason you gave
An audit trail that holds up
Every bid, every extension and every override, on the record.
- Thirty-eight kinds of event recorded, including every automatic proxy bid
- Each clock extension, each step down and each elimination is on the record
- The lot report flags when several bidders have been bidding from one address
- Once an event opens, its lots, quantities and price limits are fixed
- A cancelled event keeps its full record; only a draft can be deleted
What is on the record
Every bid. And who moved the clock.
- Thirty-eight kinds of event are recorded, including every bid, every automatic proxy bid, every extension, each clock step and elimination, each lot closed and awarded.
- Invitations, supplier responses, terms acceptance and withdrawals are recorded, with the exact terms text each supplier agreed to.
- An override of the advisory recommendation is recorded with the reason the buyer gave.
- Once an event opens, its lots, quantities and price limits are fixed. Suppliers can be added but not removed.
- Status changes are recorded; edits to other event fields while an event runs are not. We would rather tell you which is which.
- Only a draft can be deleted, and only by an administrator. Anything past draft can be cancelled, and a cancelled event keeps its full record.
What it will not do
Worth knowing before you buy.
Some of these are deliberate and some are simply not built. Each one says which, because you will find out either way.
Everyone bids in the lot’s currency
Each lot has one currency and every supplier bids in it. There is no bidding in your own currency and no conversion of bids for ranking. If you need suppliers in three regions quoting in three currencies on one lot, this is not built.
The award is not approved by a second person
Not built. Your award takes effect immediately. You can award to someone other than the best bid, and nothing requires a justification unless you were using the advisory recommendation and chose to override it.
Suppliers cannot take a bid back
A deliberate decision. A supplier can place a better bid, but no bid can be withdrawn or deleted, and a buyer cannot void one. Everything that was bid stays on the record. A mistyped bid is corrected by bidding again, not by erasing.
Quality and risk scores do not move the live ranking
A design decision. Ranking is on price, or in the weighted format on scores the supplier enters themselves. Supplier performance, risk and compliance data reaches the decision only through the advisory recommendation after the close.
No bundle bidding, lot groups or all-or-nothing lots
Not built. You can run as many lots as you like and award the whole event to one supplier on their total, but a supplier cannot bid a package price across lots, and lots cannot be grouped or made conditional on each other.
Terms are settled outside the event
A boundary. Suppliers compete on price, and on freight, tax and charges where you set the lot up that way. Incoterms and payment terms are not part of the bidding.
English only, and no mobile app
Not built. The buyer and supplier screens and the emails are in English, and times show in your organisation’s time zone rather than the supplier’s. There is no native app and no bidding by text message; the supplier portal works in a phone browser.
Two events. Two different endings.
A repeat part tested against the market
A machined bracket bought from the same supplier for years. One lot, priced per unit with freight included, start price set at the incumbent’s current price and a floor below it. Four suppliers invited, English format, a two-hour window. Bids land, one supplier sets a proxy limit and walks away, two late bids each push the clock out five minutes. You award the lot and, because it is the only one, the purchase order is raised and emailed to the winner.
A plant fit-out where price is not the whole story
Three lots: equipment, installation and spares. Weighted format, with weights you set per lot. Suppliers bid a price and enter their own quality, delivery and service scores, so you check those against each supplier’s actual record before deciding. Two suppliers finish close on the equipment lot, so you launch a best-and-final round for those two. Different suppliers win different lots, and a draft contract is created for each.
Selling what you no longer need
A forward event for surplus tooling. The highest bid wins and anything below your reserve is refused at entry. Suppliers see the current best and their rank, the clock extends on a late bid the same way, and the whole thing is recorded the same way. No purchase order is raised, because you are selling rather than buying.
Bring one category you always negotiate by email.
We will set it up as a practice event with your own suppliers. Nothing bid in it counts, and you will see which format fits before you run one for real.
Security, compliance and recognition
Checked by auditors. Judged by the industry.
Where each compliance programme stands, and what the procurement industry has given us so far.
Security and compliance
Awards
Five, presented on stage at three industry events.
- Autonomous Procurement Platform of the Year
- Procurement Technology Innovation Award
- Unified Procurement and Supplier Management Platform
- Procurement Startup of the Year
- AI in Procurement or Supply Chain Award — Solution Provider
Before you book anything. Answered honestly.
What is auction software?
Auction software runs a live, timed event in which invited suppliers compete on price under rules fixed before bidding opens. In a reverse auction, which is most procurement use, suppliers bid the price down and the lowest wins. In a forward auction you are selling, and the highest wins. The value is not that it is faster than email, though it is. It is that the rules are enforced the same way on every bid and the whole thing is on the record afterwards.
How many auction formats does Proconomy support?
Nine. English, rank-only, sealed bid, Dutch clock, Japanese step-down, split quantity, weighted, forward, and a best-and-final offer round. Eight of them can start an event; the best-and-final round is launched after an event has closed. RFQ, RFP and RFI are separate from these and run in Sourcing & RFx.
Which format should we use?
English when the specification is clear and several suppliers can do the work, because open price pressure does the most there. Rank-only when you want competition without publishing where the price landed. Sealed when you want one best offer and no dynamics. Dutch when you need a fast answer. Japanese when you want to see where each supplier drops out. Split when you intend to dual-source. Forward when you are selling. If you are unsure, the system can suggest a format for the category, and you can run a practice event first with real suppliers and no commercial effect.
Can a supplier win by bidding in the last second?
Not if you set an extension rule, and you should. A bid that lands inside your trigger window pushes the end time out by the amount you choose, up to the number of extensions you allow. Every bidder is told each time it happens. Without that rule the clock is hard and the server refuses a late bid, so timing matters more than price.
What stops a supplier bidding a silly number?
Your price limits. A bid below the floor is refused, an opening bid above the start price is refused, and a bid that does not beat the current best by your minimum decrement is refused. Every refusal names the rule and the number. The one thing to know is that there is no warning for a bid that is unusually far below the supplier’s own last one — it is accepted if it clears your limits.
Can only approved suppliers take part?
Partly, and it is worth being precise. Suppliers who are blocked or inactive cannot be invited. You can set gates that either block or warn on an expired master services agreement for a services supplier, and on an expired ISO 27001 certificate. Other things you might expect to be checked — risk scores, wider qualification status, other certificates — are not. Guest bidders skip the gates entirely. If supplier eligibility has to be airtight before an event, check the list yourself rather than relying on the gates.
What happens after we award?
It depends which way you award. Award the lots one at a time on a reverse event and, once the last lot is awarded, purchase orders are raised for each winning supplier and emailed to them. Tick the contract option on the event and a draft contract is created too, which still needs its lines and payment terms added. Award the whole event to one supplier, or let the Dutch or Japanese clock decide, and you get the award record and a pre-filled form to raise the order yourself. Either way, getting the result into your own finance system is a step your team takes.
How is the savings figure calculated?
Savings are the start price minus what was awarded, on a reverse event, or the awarded total minus the reserve on a forward one. The baseline is the start price you set, not a historical price or a budget. That is worth saying plainly, because it means a high start price produces a flattering number. If you want the figure to mean something, set the start price at what you are paying today.
One category. One practice event.
No slides. Your own suppliers, your own category, and nothing bid in it counts.
Someone from client success replies, not a sales sequence. If we are not a fit we will say so on the first call.
Not ready to talk to anyone?
Fair enough. Both of these work without giving us your email.