Confidential Budget under Law 14,133: When to Use It

Understand when the budget may remain confidential under Law 14,133, what must remain public and how to apply the strategy in public works and engineering services.

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A confidential budget is an option provided by Law 14,133/2021, not an automatic rule. Art. 24 allows the estimated budget for the procurement to remain confidential provided the decision is justified, without preventing disclosure of quantities and the other information necessary for bidders to prepare proposals. In public works and engineering services, this means the Public Administration may postpone disclosure of its economic reference, but it may not conceal the scope, quantities, execution conditions or other elements essential to pricing.

The decision to use confidentiality must arise during the preparatory phase. Art. 18 requires justification of the timing for budget disclosure, and the TCU emphasizes that the strategy should be defined before the procurement. The legitimate objective is to prevent the Administration’s budget from acting as an anchor for bids and, under certain market conditions, encourage more independent competition among bidders.

In engineering, however, confidentiality can have the opposite effect when applied without analysis. A poorly prepared budget remains a poorly prepared budget even when nobody knows it. If the reference is below actual costs, the Administration may discover the problem only after bids are opened, increasing the risk of difficult negotiation, failed procurement or the need to revise the contracting strategy.

What Law 14,133 means by a confidential budget

A confidential budget is the budget estimated by the Administration whose value is temporarily withheld from bidders and the public during part of the procurement procedure.

It is not the same as having no budget. The Administration remains required to prepare its estimate, document calculation memoranda and use a methodology compatible with Art. 23. What changes is only the timing of disclosure.

The procurement file must contain the complete economic reference. Confidentiality does not prevail against internal and external oversight bodies.

This distinction is fundamental because some tender documents use the expression “confidential budget” imprecisely, as if the Administration could simply omit any reference or prepare the budget later. The Law does not allow that.

The budget must exist before the procurement

A confidential budget is not the absence of a budget. The Administration must know and document its economic reference before the procurement; only disclosure to the market may be deferred.

Explore price research for engineering procurement

The value estimate belongs to the preparatory phase. In public works and engineering services, it must be formed according to the applicable legal parameters, considering cost compositions, BDI, social charges, quantities and specific execution conditions.

Confidentiality does not authorize:

preparing the budget after proposals are opened;
adjusting the reference to match market prices after the offers are known;
failing to document unit prices;
omitting calculation memoranda from the procurement file;
dispensing with compatibility checks against Sicro, Sinapi or other legally applicable sources;
turning the bidder’s proposal into the sole source for defining the acceptable value.

The Administration must know its own technical-economic limit before receiving offers.

What may remain confidential and what must be disclosed

Art. 24 establishes an important boundary: the estimated budget may remain confidential, but detailed quantities and the other information necessary to prepare proposals must be disclosed.

In public works, this normally means preserving the economic reference without removing the technical pricing basis from the market.

Information	May it remain temporarily confidential?	Observation
Estimated total value	Yes, if justified	part of the disclosure strategy
Administration’s reference unit prices	may be part of the classified portion	must exist and be documented in the procurement file
Service quantities	Should not be concealed when needed for the proposal	bidder must price the scope
Required drawings and designs	No	part of the technical basis for competition
Specifications	No	requirements must be known
Measurement conditions	No	directly affect price formation
Risk allocation matrix	No	risks must be known and priced
Execution period	No	affects mobilization and indirect costs
Award criteria	No	must be published in advance

Confidentiality should apply to the Administration’s reference, not to the definition of the scope.

A confidential budget is not a “confidential scope”

This is the most important distinction for public works and engineering services.

A company can only formulate a responsible price when it knows:

what must be executed;
in what quantity;
under which standards;
at which location;
with which interfaces;
within what schedule;
under which risks;
how it will be measured and accepted;
which obligations are included in the price.

Concealing these elements reduces proposal quality and increases contingencies. A bidder cannot be required to discover the scope by trial and error merely because the Administration chose not to disclose its economic reference.

When a confidential budget may create an advantage

The most common justification for confidentiality is to reduce the anchoring effect.

When the public budget is known, some bidders may structure their proposals around the disclosed ceiling instead of pricing independently. In competitive markets, confidentiality can encourage each participant to reveal its own assessment of cost and risk.

The strategy tends to be more defensible when:

there is a reasonable number of capable suppliers;
the market is sufficiently competitive;
the scope is well specified;
quantities are mature;
the Administration has good price references;
costs are not excessively volatile;
there is confidence in the quality of the internal budget;
the negotiation stage is well planned;
there is no legal requirement to disclose the estimated price in the tender documents from the outset.

Under these conditions, confidentiality may function as a contracting-strategy tool.

When a confidential budget may increase risk

Confidentiality warrants caution when the Administration has low confidence in its own reference.

Higher-risk situations include:

incomplete Basic Design;
quantities subject to major changes;
work with many unknown interferences;
market with few suppliers;
high share of imported equipment;
exchange-rate or input-price volatility;
strong dependence on specialized logistics;
procurement date far from the budget base date;
poor-quality cost compositions;
contracts with a high risk of bids above the reference.

If the budget is incorrect, keeping it confidential may delay discovery of the problem. Bidders cannot challenge in advance a reference they do not know, and the Administration may reach the evaluation stage with every proposal outside the acceptable range.

The TCU identifies exactly this risk: a poorly prepared confidential budget may lead to a failed procurement because the reference is unfeasible or, at the opposite extreme, to contracting at an overpriced level when the estimate is excessively high.

Confidentiality must be justified during the preparatory phase

Art. 24 does not create a presumption that confidentiality is advantageous. The decision must be justified.

A consistent technical justification may answer:

what market behavior the Administration intends to induce;
how many potentially qualified suppliers exist;
why disclosure could anchor proposals;
how confident the Administration is in its estimate;
which technical data will remain public;
when the budget will be disclosed;
how any negotiation will be conducted;
which risks confidentiality creates and how they will be treated.

“Adopt a confidential budget to obtain better prices” is insufficient as a standalone justification. The Administration must explain why this strategy makes sense in that market and for that scope.

Confidential budget and highest discount

There is a relevant express exception.

When the award criterion is highest discount, Art. 24 requires the estimated price or maximum acceptable price to appear in the tender documents.

The reason is logical: the discount must apply to a known base. Discount percentages could not be compared transparently if bidders did not know the reference against which they were competing.

Therefore, highest discount and a fully concealed budget are incompatible.

Confidential budget and best technique

In procurements using best technique, the remuneration or prize value must appear in the tender documents according to the statutory rules governing the criterion.

This shows that the confidentiality strategy depends on the selected award criterion. It is not enough to first decide to hide the budget and then try to fit any criterion around that choice.

The procurement architecture must be defined in an integrated manner:

procurement procedure;
award criterion;
dispute mode;
budget;
timing of disclosure;
negotiation.

What about technique and price?

Technique and price requires a technical proposal and an economic proposal evaluated according to objective weights. The open mode is prohibited, but that does not, by itself, mean the Administration’s budget must be public from the outset.

These are different decisions.

The Administration should assess whether concealing the economic reference favors competition without compromising proposal preparation and whether any negotiation phase will remain operationally viable.

For intellectual services and engineering designs there is an additional point: the more heterogeneous the effort required to meet the scope, the greater the importance of a clear technical basis. A confidential budget cannot compensate for Terms of Reference that fail to adequately define deliverables, minimum team, assumptions and acceptance criteria.

Confidential budget vs. closed dispute mode

Another recurring mistake is to confuse budget confidentiality with closed mode.

In closed mode, bidders’ proposals remain temporarily confidential until the scheduled opening.

With a confidential budget, the protected information is the Administration’s economic reference.

A procurement may therefore combine:

public budget + open mode;
confidential budget + open mode;
public budget + closed mode;
confidential budget + closed mode, when legally and operationally compatible with the selected criterion.

Each decision needs its own basis.

When the budget should be disclosed

The Law allows deferred disclosure, but the Administration must plan when the reference will be revealed.

At the federal level, IN SEGES/ME No. 73/2022 allows disclosure before negotiation once the most advantageous proposal has been identified, precisely to make negotiation more effective when values remain above the estimate.

The TCU has also recognized the usefulness of lifting confidentiality after the bidding stage when proposals are above the reference, provided the decision is public and duly justified.

The sequence can be considered in three moments.

Before the competition

The reference is disclosed in the tender documents. There is maximum economic transparency, but also greater anchoring risk.

After the competition and before negotiation

The Administration preserves the initial competitive effect and reveals the reference when it needs to negotiate with the highest-ranked bidder.

After completion of the procurement

This is the maximum deferral point when the adopted strategy preserves the budget throughout evaluation, subject to the applicable rules.

The choice should not be improvised once negotiation has begun.

Why negotiation is the critical point

Imagine a confidential budget of R$ 10 million and a best proposal of R$ 11.2 million.

The Administration knows the offer is 12% above the reference, but the bidder does not know that figure. If negotiation is conducted only through generic requests for reduction, effectiveness may be low.

Disclosing the reference at the appropriate time can make negotiation objective: the bidder learns the limit and can demonstrate where composition differences exist or whether the proposal can be reduced.

This also generates information for the Administration itself. If all suppliers remain above the reference even after disclosure, the problem may lie in the official budget rather than only in the proposals.

A confidential budget does not eliminate market analysis

A mistaken interpretation is to assume that, because suppliers will not know the budget, the Administration can invest less in price research.

The opposite is correct.

The greater the confidentiality, the greater the required confidence in the internal reference, because it will be used to:

assess acceptability;
identify overpricing;
conduct negotiation;
verify feasibility;
decide whether to declare failure or continue;
support internal and external oversight.

In public works, this requires a budget technically coordinated with the design.

How to prepare the reference for public works and engineering services

Art. 23 establishes specific parameters for public works and engineering services. The estimate must consider BDI and Social Charges and use the systems and sources admitted by law.

In practice, a defensible budget must demonstrate:

quantities traceable to the design;
coherent cost compositions;
source of input prices;
productivity;
equipment costs;
labor;
mobilization;
site administration;
BDI;
social charges;
base date;
regional conditions;
execution assumptions.

If the budget does not explain these elements, confidentiality merely hides a weak reference.

Quantities remain essential

The caput of Art. 24 expressly protects access to the information necessary to prepare proposals.

In public works, quantities are a central part of that basis.

A confidential budget should not prevent the bidder from knowing, for example:

meters of piping;
paving areas;
concrete volume;
number of electrical outlets;
number of equipment items;
cabling length;
demolition quantities;
excavation volumes;
relevant temporary works.

If these quantities are immature, the problem is one of design and budgeting, not disclosure.

BDI and a confidential budget

The Administration’s BDI is part of the reference-price formation. Depending on the adopted strategy, reference values may remain classified during the competitive phase.

But this does not remove the need for the tender documents to clarify the tax regime, contractual risks, insurance, guarantees and other conditions that influence bidders’ BDI.

Each company may have a different indirect-cost structure. The Administration should not expect market BDI to be identical to its reference; its composition should be used as a budgeting and analysis tool, subject to the applicable rules.

Anchoring risk: how it works in practice

Suppose three companies are capable of executing a public work whose actual competitive cost lies between R$ 18 million and R$ 20 million.

If the tender documents disclose a maximum budget of R$ 23 million, some bidders may formulate proposals close to that value, preserving a high margin.

If the reference remains confidential, each company must estimate the price it believes will be competitive against the others.

This is the main economic argument in favor of confidentiality.

But the effect depends on the market. In a sector with only two suppliers, high mobilization costs and strong information asymmetry, concealing the reference may not produce meaningful additional competition.

Risk of a budget below the market

Now consider the opposite scenario.

The Administration estimates R$ 18 million, but the actual market cost has risen to R$ 21 million after increases in inputs and logistics. The budget remains confidential.

Proposals arrive between R$ 20.8 million and R$ 22 million. None meets the reference.

In this case, confidentiality did not generate savings. It merely postponed discovery that the reference was outdated.

The Administration must then:

verify the quality of the budget;
update critical inputs;
compare proposals with one another;
negotiate;
decide whether there is an acceptable proposal;
potentially recognize failure and revise the procurement.

The lesson is simple: confidentiality does not replace budget accuracy.

Risk of a budget above the market

If the internal reference is excessively high, the problem is different.

Confidentiality may reduce the anchoring effect and prevent bidders from artificially approaching the ceiling. However, if competition is limited, the Administration may still receive offers above the efficient market level.

Therefore, price analysis, comparison among proposals and market research remain necessary even when the result is below the official budget.

A proposal 5% below an overestimated reference is not automatically advantageous.

How to decide between a public and confidential budget

The decision can be structured as a contracting matrix.

Factor	Favors disclosure	Favors temporary confidentiality
Few suppliers	greater transparency may help	competitive benefit tends to be smaller
Many suppliers	possible	confidentiality may reduce anchoring
Low-confidence budget	disclosure allows prior criticism	confidentiality increases risk
Robust budget	possible	confidentiality is more defensible
Immature scope	first correct the design	confidentiality does not solve it
Highest discount	base disclosure is mandatory	confidentiality is incompatible
Volatile market	transparency may reduce surprises	risk of an outdated reference
Strong bid competition	public reference may anchor bids	confidentiality may stimulate price discovery

The matrix must be complemented by legal analysis and the regulations of the relevant public entity.

Robustness test before adopting confidentiality

Before publication, the team can perform a simple test.

Question 1: if all proposals come in above the reference, do we know what to do?

If the answer is no, the negotiation design is incomplete.

Question 2: can we demonstrate that the budget represents the market?

If not, the reference must be improved before being concealed.

Question 3: can the bidder price the scope without knowing our prices?

If not, technical information about the scope is probably missing.

Question 4: do we know when confidentiality will be lifted?

If not, the strategy has not yet been fully defined.

Question 5: is there a legal case requiring disclosure from the tender documents onward?

If so, confidentiality cannot contradict that rule.

What to record in the administrative file

A well-instructed file should contain:

an express decision on whether the budget is public or confidential;
legal basis;
justification for the strategy;
assessment of the supplier market;
budget calculation memorandum;
supporting documents;
proper classification of confidential documents;
identification of who may access them;
planned timing for disclosure;
procedure in the event of negotiation;
record of lifting confidentiality when it occurs;
subsequent publication according to the applicable rules.

This prevents the strategy from appearing to be an informal decision by the procurement committee.

How to handle bidders’ requests for clarification

During the proposal phase, companies may question items that could indirectly reveal part of the economic reference.

The Administration must distinguish:

a legitimate question about scope;
a question about quantities;
a question about measurement criteria;
an attempt to discover the reserved price.

Technical information necessary to prepare a proposal must be clarified. Confidentiality cannot be used as a justification for withholding essential information about the scope.

At the same time, the response does not need to reveal the economic reference if it is validly classified.

Confidential budget in contracts with significant equipment content

In engineering systems with a high equipment share — electronic security, automation, data centers, power, HVAC, telecommunications — the reference depends on components that may vary significantly by brand, exchange rate, taxes, logistics and commercial conditions.

In these cases, the Administration should verify whether its budget represents:

a solution equivalent to the specification;
actual equipment availability;
current market prices;
licenses and software;
warranties;
support;
integration;
installation and commissioning;
exchange rate when applicable.

A confidential budget built from a quotation for discontinued equipment or a technically non-equivalent solution creates a false reference.

Confidential budget in technique-and-price procurement for Consulting Engineering

In Consulting Engineering, design, management and other intellectual services, price formation mainly involves team composition, HTEs, mobilization, tools and direct expenses.

If the budget is confidential, the Terms of Reference must be particularly clear regarding:

expected deliverables;
level of development;
duration;
milestones;
minimum professional profiles when applicable;
field requirements;
meetings;
revisions;
responsibilities;
acceptance criteria.

Without this, companies may propose completely different levels of effort and prices cease to be comparable.

Economic confidentiality only works when there is sufficient equivalence in the technical understanding of the scope.

Confidential budget and failed procurement

The two topics are directly connected.

If all proposals remain above the confidential reference, the Administration may reach a failed procurement. Before that, it should use the available negotiation mechanisms and verify whether the budget is correct.

The analysis should answer:

is the reference current?
do the proposals converge with one another?
has there been a relevant market change?
is the scope causing a risk premium?
are there underestimated cost compositions?
does negotiation have a realistic chance of success?

If the answer shows that the error lies in the budget, insisting on the confidential value merely because it was internally approved does not create public value.

Case study: public work with a competitive market

A Public Administration intends to contract a standardized public work internally estimated at R$ 25 million. The Basic Design is complete, quantities have been audited, the budget uses updated cost compositions and more than ten companies are capable of competing.

The team identifies a strong anchoring risk if the ceiling is disclosed. It decides to keep the estimated value temporarily confidential, documenting the justification in the procurement file.

Proposals arrive between R$ 21.8 million and R$ 24.5 million. Competition reveals prices below the reference and the procedure continues normally.

In this scenario, confidentiality served a plausible strategic function because the Administration had:

good internal information;
a broad market;
a mature scope;
effective competition.

Case study: public work with a weak budget

In another project, the budget was prepared eight months before the procurement, while quantities were still under review and imported items were subject to significant exchange-rate fluctuation. There are only three specialized suppliers.

The Administration chooses confidentiality without updating the reference.

All three proposals arrive approximately 18% above the budget. After opening, it becomes clear that the estimate had not incorporated increases in equipment prices and mobilization costs.

The problem was not disclosure or confidentiality. The problem was using a reference without sufficient reliability to evaluate the market.

Confidentiality merely delayed discovery.

Checklist for deciding on a confidential budget

Before choosing confidentiality, confirm:

the budget has been completed and approved;
quantities have been coordinated;
cost compositions represent the scope;
prices and base date are current;
the supplier market has been analyzed;
there is enough competition to produce price discovery;
the justification for confidentiality is documented;
the award criterion allows the strategy;
the tender documents keep all necessary technical information public;
the timing for lifting confidentiality is planned;
the team knows how to negotiate proposals above the reference;
oversight bodies will have access when necessary;
subsequent disclosure is planned.

How to review tender documents with a confidential budget

The technical review should test consistency across four layers.

Technical layer

Can the bidder know exactly what it must supply and execute?

Economic layer

Does the Administration have a sufficiently robust reference to evaluate proposals without depending on market reaction?

Procedural layer

Is the timing for lifting confidentiality compatible with competition, evaluation and negotiation?

Governance layer

Is the decision recorded, classified and auditable?

If any of these layers fails, confidentiality may increase risk instead of generating an advantage.

Final considerations

A confidential budget is a contracting-strategy tool provided by Law 14,133, but its effectiveness depends on the quality of the preparatory phase. It can reduce anchoring and encourage independent offers in competitive markets, provided the scope is mature and the internal reference is technically reliable.

Confidentiality does not authorize concealing quantities, designs, specifications, risks or information necessary to prepare proposals. Nor does it allow the Administration to omit preparing the budget before procurement. What the Law permits is deferring disclosure of the economic reference, with justification and while preserving access by oversight bodies.

For public works and engineering services, the practical rule is simple: the greater the intention to conceal the budget from the market, the higher the quality required of the budget known by the Administration itself. Confidentiality without a mature design and robust cost engineering does not increase competitiveness — it only increases uncertainty.

The decision to keep the budget confidential should be tested against design maturity, estimate quality and the actual dynamics of the supplier market.

Technically review the tender documents and annexes

Technical references

[1] BRAZIL. Law No. 14,133, of April 1, 2021 — Public Procurement and Administrative Contracts Law. Available at: https://www.planalto.gov.br/ccivil_03/_ato2019-2022/2021/lei/l14133.htm.

[2] TRIBUNAL DE CONTAS DA UNIÃO. Procurement and Contracts Manual — Confidential budget. Available at: https://licitacoesecontratos.tcu.gov.br/4-5-6-orcamento-sigiloso/.

[3] TRIBUNAL DE CONTAS DA UNIÃO. Procurement and Contracts Manual — Definition and execution of the method for calculating the estimated procurement value. Available at: https://licitacoesecontratos.tcu.gov.br/4-3-9-3-definicao-e-execucao-da-forma-de-calculo-do-valor-estimado-da-contratacao/.

[4] TRIBUNAL DE CONTAS DA UNIÃO. Procurement and Contracts Manual — Detailed budget of the total cost of the public work. Available at: https://licitacoesecontratos.tcu.gov.br/4-4-3-6-orcamento-detalhado-do-custo-global-da-obra/.

[5] TRIBUNAL DE CONTAS DA UNIÃO. Procurement and Contracts Manual — Negotiation. Available at: https://licitacoesecontratos.tcu.gov.br/5-4-3-negociacao/.

[6] BRAZIL. MINISTRY OF ECONOMY. Normative Instruction SEGES/ME No. 73, of September 30, 2022. Available at: https://www.gov.br/compras/pt-br/acesso-a-informacao/legislacao/instrucoes-normativas/instrucao-normativa-seges-me-no-73-de-30-de-setembro-de-2022.

Frequently asked questions

Can the budget be confidential under Law 14,133?

Yes. Art. 24 allows the estimated budget to remain confidential provided the decision is justified and quantities and the other information necessary to prepare proposals are disclosed.

Does a confidential budget mean the Administration does not need to prepare a budget?

No. The budget must be prepared during the preparatory phase, with unit prices, calculation memoranda and supporting documents. Confidentiality changes only the timing of disclosure.

Can oversight bodies access the confidential budget?

Yes. Art. 24 establishes that confidentiality does not prevail against internal and external oversight bodies.

Can a confidential budget be used with the highest-discount criterion?

Not in full. When the criterion is highest discount, the estimated price or maximum acceptable price must appear in the tender documents because it is the base to which the discount applies.

Are a confidential budget and closed dispute mode the same thing?

No. A confidential budget concerns the Administration’s economic reference; closed mode concerns temporary confidentiality of the proposals submitted by bidders.

When should a confidential budget be disclosed?

The timing must be planned and justified. At the federal level, IN 73/2022 allows disclosure before negotiation when necessary to negotiate with the highest-ranked bidder. The budget must also be disclosed according to the applicable rules after completion of the procurement.

Can public-work quantities remain confidential?

Art. 24 expressly preserves disclosure of detailed quantities and the other information necessary to prepare proposals. Confidentiality should not prevent correct pricing of the scope.

Does a confidential budget prevent failed procurement?

No. If the reference is outdated or poorly prepared, confidentiality may merely postpone discovery of the problem. All proposals may remain above the estimate and require negotiation or revision of the procurement.

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