How a Surety Bond Works
Understand the surety bond end to end: the three parties involved, the step-by-step process of getting one, what happens in a claim, and why it is usually more efficient than a cash deposit or a bank letter of guarantee.
A surety bond involves three parties: the principal (the contracted company), the obligee (the beneficiary), and the surety (the insurer). The surety guarantees to the obligee that the principal will meet its obligation; if the principal defaults, the surety indemnifies the obligee up to the bond amount. In return, the principal pays a premium and signs a counter-guarantee.
Key facts
- Three parties: Principal (contracted company), obligee (beneficiary), and a surety authorized by Susep.
- What it guarantees: The surety guarantees the principal's performance of its obligation to the obligee.
- Indemnity limit: In a claim, indemnification is capped at the bond amount (sum insured) of the policy.
- Cost to the principal: The principal pays a premium, usually 0.5% to 5% per year on the guaranteed amount.
- Counter-guarantee: The principal signs a counter-guarantee, giving the surety a right of recovery if it pays the obligee.
- Does not consume bank credit line: Because it is insurance rather than credit, the surety bond does not tie up the company's bank credit line.
The three parties to a surety bond
| Party | Role | Who it usually is |
|---|---|---|
| Principal | The one who takes on the obligation and buys the bond | The contracted company (builder, supplier, service provider) |
| Obligee | The one who is protected and receives indemnity in a claim | The beneficiary: public body, private contractor, or a court |
| Surety | The one who guarantees the obligation and pays the indemnity | An insurer authorized by Susep |
The three parties
A surety bond is always a triangular agreement. The principal is the company that takes on an obligation — completing a project, delivering a supply, honoring a contract or a judicial deposit — and buys the bond to give the counterparty security. The obligee is the beneficiary of the guarantee: the public body, private contractor, or court in whose favor the bond is issued.
The surety is the party that actually guarantees the obligation. Authorized and supervised by Susep, it assesses the principal's risk, issues the policy, and commits to indemnify the obligee up to the agreed amount if the principal fails to perform the secured obligation.
This three-party structure is what sets a surety bond apart from a simple bilateral relationship: the surety steps in as a solvent, regulated third party whose sole role is to assure the obligee that the obligation will be met — either directly or financially.
To go deeper, also see what is a surety bond, how much a surety bond costs bank letter of guarantee vs surety bond.
Step by step: getting a bond
1. Define the guarantee: the principal identifies the obligation to secure (a tender bid, contract performance, an advance payment, a judicial deposit) and the amount required by the obligee — the sum insured.
2. Risk analysis: the principal submits corporate and financial documents; the surety assesses credit and capacity to perform. Unlike a bank letter of guarantee, there is no tying up of the bank credit line.
3. Premium and counter-guarantee: once approved, the surety calculates the premium (a percentage of the guaranteed amount) and the principal signs the policy and the counter-guarantee, which gives the surety a right of recovery.
4. Policy issuance: the surety issues the bond in favor of the obligee, usually within 24 to 72 hours. From then on, the principal's obligation is secured before the obligee for the entire term.
What happens in a claim
A claim arises when the principal defaults on the secured obligation — for example, abandons the work, fails to deliver the supply, or does not honor the contract. The obligee notifies the surety of the default and presents the documents evidencing the breach and the loss.
The surety investigates the claim. Unlike an on-demand guarantee, a surety bond involves verification: the surety confirms that an actual default occurred before indemnifying. Once the claim is confirmed, it indemnifies the obligee up to the sum insured — never above the bond amount.
After paying the indemnity, the surety exercises its right of recovery against the principal based on the signed counter-guarantee. In other words, a surety bond protects the obligee but does not release the principal from ultimate responsibility for the default.
Advantages vs cash deposit and bank guarantee
Against a cash deposit, a surety bond frees up cash: instead of leaving the guaranteed amount idle as a deposit, the company pays only the premium (a fraction of the amount) and keeps its working capital available to operate and grow.
Against a bank letter of guarantee, a surety bond does not consume the company's bank credit line. The letter of guarantee usually ties up that line and requires counter-guarantees and banking reciprocity; the surety bond relies on the surety's risk analysis and generally costs less in total and is issued faster.
On top of that, the surety bond is regulated by Susep, accepted in public tenders under Law 14.133/2021, and recognized by the Civil Procedure Code (art. 835, §2) to replace a cash judicial deposit — combining cash efficiency with weight before public authorities and the courts.
Frequently asked questions
What are the parties to a surety bond?
There are three: the principal (the company that takes on the obligation and buys the bond), the obligee (the beneficiary protected by the guarantee), and the surety (which guarantees the obligation and pays the indemnity in a claim).
What does the surety guarantee in a surety bond?
The surety guarantees to the obligee that the principal will perform the obligation it took on. If the principal defaults, the surety indemnifies the obligee up to the bond amount (sum insured) of the policy.
How much does the principal pay for a surety bond?
The principal pays a premium, usually 0.5% to 5% per year on the guaranteed amount, depending on the modality, term, and risk analysis. It also signs a counter-guarantee in favor of the surety.
What happens if the principal fails to perform?
A claim arises. The obligee calls on the surety, which investigates the default and, once confirmed, indemnifies the obligee up to the bond amount. The surety then recovers from the principal through its right of recovery, based on the counter-guarantee.
Does a surety bond consume my bank credit line?
No. Because it is insurance issued by an insurer rather than bank credit, the surety bond does not tie up the company's bank credit line — unlike a bank letter of guarantee, which usually consumes that line.
How long does it take to get a surety bond?
After risk analysis and documentation, the bond is usually issued within 24 to 72 hours — generally faster than formalizing a bank letter of guarantee.
Ready to get a surety bond?
ERGO issues surety bonds for public tenders, contracts, and judicial proceedings — preserving your cash and your credit line.