SangoBidsSangoBids
Submit and follow through

Deliver the contract and get paid

From notification to acceptance: start order, advance, payment certificates, penalties, late payment and what you can do about it.

7 min readUpdated 2 November 2026
Cameroon edition: the rules shown are this country's.Change country

Winning the contract is only half the journey. It is during delivery that a small firm makes or loses money, most often because of work done without a written order or a payment that runs late. This article follows the contract from notification to the last guarantee released. Your contract prevails over what follows, so read all of it before you start.

From notification to start of work

The order and names of these steps change with the country and the buyer, but you will find them almost everywhere.

  1. Notification

    The buyer officially tells you the contract is awarded to you. The time for what follows often starts on this date. Keep the proof of receipt.

  2. Signature and approval

    You sign the contract. Depending on the amount and the country, an authority must still approve it before it takes effect. Reread the amounts, time limits and attachments before signing.

  3. Performance guarantee

    You hand it over within the time set. Delaying this document can lose you the contract. See Bonds and guarantees.

  4. Registration

    Where the rules require it, the contract must be registered with the tax administration, which has a cost. Without this, your payments may be blocked.

  5. Start order

    The start order (ordre de service) is the written instruction to begin. Your delivery period generally runs from its date, or from the date it states. Do not start without it, and note the date you received it.

  6. Advance payment

    If the contract provides for an advance, ask for it as soon as you can with the required guarantee. It helps fund the start, but do not count on it arriving at once: plan to be able to manage without it.

During delivery: everything in writing

Your best protection is a complete record. When a disagreement breaks out, what is not written does not exist.

Keep the diary. On a works site, the site diary records each day's workforce, equipment, weather, deliveries, visits and problems. For supplies or services, keep the equivalent: delivery notes, attendance sheets, meeting notes. This record is what later shows that a delay came from the buyer and not from you.

Never work without a written order. An official on site asks you for extra work, or a change of model. Without something in writing from the person with the power to order it, you may never be paid for that work, even if it was done in good faith. Reply politely, and ask for the written order or the amendment (avenant, the act that changes the contract) before you begin.

Report problems straight away. Wrong drawings, access to the site refused, late payment: write as soon as the problem appears, asking for an extension of time if needed. Many contracts set a limited time for making claims.

Watch the penalties. A late delivery penalty (pénalité de retard) is usually calculated on the length of the delay and deducted from your payments, sometimes up to a cap beyond which the contract can be terminated. It applies to delay for which you are responsible. Hence the value of the diary, and of written requests for more time for anything that does not come from you.

Get acceptance in stages. When the contract allows it, have each delivered part or completed phase recorded in minutes. This triggers payments and limits arguments at the end. On a site, have work that will be covered up inspected before it disappears.

The payment chain

In a public contract, your payment generally passes through several hands, and each step can stall. Understanding the chain tells you who to talk to.

  1. Your request

    An invoice or, for works, a payment certificate (décompte), the dated statement of what has been done and what is owed. Attach the documents the contract requires: acceptance minutes, delivery notes, measurement sheets.

  2. Verification

    The supervising engineer, inspector or technical department checks the quantities, then the buyer certifies that the work was done. This is where most returns and corrections happen.

  3. Payment order

    The competent authority orders you to be paid (ordonnancement). It gives the formal instruction to the accountant, with the amount and the payee.

  4. Payment

    The public accountant, or the project's finance department, makes the transfer after its own checks and depending on available cash.

On a funder-financed project the chain often goes through the project unit, and it may need action by the funder or the State for their respective shares. An international organisation or a private company has its own circuit, usually shorter. The contract or the finance department will tell you.

Why it stalls

The most common causes are an incomplete or non-compliant invoice, a signature waiting because someone is away, a budget that is not available, tight public cash, a change of official, or a funder's money that has not arrived. You cannot solve everything, but you can avoid the first two.

How to follow it

  • File each invoice with a copy, and have it stamped or signed. This receipt proves the date from which any delay is calculated.
  • Keep a simple table: invoice number, amount, filing date, stage, person to contact, date of the last reminder.
  • Follow up regularly and courteously at each stage of the chain, and confirm in writing what you are told verbally.
  • If a document is missing, correct it the same day: any delay on your side pushes your payment back.

Late-payment interest

Where the applicable text or the contract provides for it, payment after the set period gives a right to late-payment interest (intérêts moratoires), which is interest owed by the buyer for its delay. This right does not exist in the same way everywhere, and you often have to claim it in writing. Many firms hesitate to do so. At the very least, keep the proof of dates, which leaves you the choice.

The rule in Cameroon

Advance payment

  • A start-up advance exists only if the special administrative clauses provide for it (art. 159). On simple request and without justification, it may reach 20% of the initial tax-inclusive price for works, services and intellectual services, and 40% for supplies (art. 160).[1][2]
  • The advance must be 100% guaranteed by a Cameroonian bank or an approved first-rank financial body, and is paid only after the required bonds are in place. It is repaid by deductions from payments, between 40% and 80% of contract completion. The advance payment is subject to VAT (art. 160; 2022 circular, point 179).[1][4]
  • An advance for materials may also be provided, paid against proof of spending: materials owned outright, paid for, set apart and checkable on site. The holder remains responsible for guarding them until acceptance (art. 161).[1][2]

Retention

  • If the contract has a guarantee or maintenance period, a retention of at most 10% of the initial value (amendments included) is deducted from payments on account, or replaced by a performance bond. It is not required for intellectual services (art. 138; circular, points 180 to 182).[1][2][4]
  • It covers the guarantee period until final acceptance and is then released on the buyer's discharge. After 30 calendar days it must be released on simple request (arts. 139 and 141).[1][2]

Payment

  • Payments are made by transfer to an account with an approved first-rank Cameroonian bank, or by documentary credit. A change of bank details can be made only by amendment (art. 158). Payments on account may be monthly or at the agreed pace; each may not exceed the value of accepted work, less repaid advances and retention (arts. 162, 164 and 165).[1][2]
  • Payment deadlines for a payment on account: at most 90 working days from the transmission to the accountant of the findings that give rise to payment; in any case no more than 60 working days after the draft statement is sent to the works supervisor, if it needs no correction (art. 165). The text does not say how to reconcile the two deadlines: read your contract's clauses.[1][2]
  • If the buyer or the accountant pays late, default interest runs automatically for the holder, at the BEAC lending rate for businesses plus one point. It is not taxable (arts. 166 and 167).[1][2]
  • Late-delivery penalties fall on the holder, unless the contract says otherwise: 1/2000 of the tax-inclusive base contract value per calendar day from day 1 to day 30, 1/1000 after that. Cumulated penalties are capped at 10% of the tax-inclusive amount (arts. 168 and 169). They apply only after a formal notice (circular, point 192). The Code bars price revision for contracts of 12 months or less, and caps all amendments at 30% of the base contract (arts. 130 and 146).[1][2][4]
  • The contract is stamped and registered at the holder's expense (circular, point 123). No claim is admissible for services performed before the contract is notified (art. 123).[1][4]

Financing the wait

The need for cash is one of the first dangers of a public contract for a small firm. Plan for it when you price, as Price your financial bid shows, and talk to your bank before you sign. Several tools exist depending on the bank and the country.

  • An overdraft or cash facility: short-term credit attached to your account, to cover the gaps between your spending and your receipts.
  • A pledge of the contract (nantissement de marché): you give the bank a right over this contract's payments in exchange for credit. It often requires payments to go through your account with it, and the buyer often has to be informed in the prescribed form.
  • Invoice discounting or assignment of a receivable: the bank or a specialist firm advances you the amount of a validated invoice, less a fee, without waiting for the buyer to pay.
  • Supplier credit: a payment period negotiated with your suppliers. It is not a bank product, but it is often the first lever.

Always calculate the cost and compare it with your margin. Credit that is too expensive can swallow the contract's profit.

Acceptance and release of guarantees

For works, the end of a contract usually comes in two stages. A simple supply may have only one.

Provisional acceptance (réception provisoire). The buyer records that the work is complete, with minutes and possibly a list of snags, the defects to fix. It generally stops the risk of late penalties and opens the warranty period. Request it in writing as soon as you are ready, and clear the snags without delay.

Final acceptance (réception définitive). At the end of the warranty period, if defects have been fixed, the buyer issues final acceptance. This is generally when you get back the retention and the remaining guarantees.

These releases do not always come by themselves. Write to request the release (mainlevée), the act that frees the bank, and the balance of the retention. A forgotten guarantee keeps costing you fees and keeps your money blocked.

Your next reference

At acceptance, ask for a certificate of good performance (attestation de bonne exécution) signed by the buyer, with the subject of the contract, the amount, the dates and an assessment. This is what will let you prove this reference in your next bid, as Write a technical bid that gets through explains. The longer you wait, the harder it gets to obtain, because officials move on.

Read next

Ready to try?

The account is free and public tenders stay free. Three minutes is enough to receive the first ones.

Get started free