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Methodology

Sources, coverage, and data treatment

The site stores the official BCB rate, BCB referential rate, and estimated parallel rate from P2P data as a separate series families. This prevents official, referential, and market sources from being mixed.

Ministerial Resolution No. 245 from the Ministry of Economy and Public Finance establishes the current flexible exchange-rate framework. RD 142 sets the current operational TCO calculation and publication rules; news and market references provide context only.

This page documents the current sources, historical coverage, treatment of missing values, and known limitations. For practical examples, see the English guide or FAQ.

TCO movement and suspended numerical forecast

The numerical next-TCO forecast is temporarily suspended while the model is revalidated under RD 142. No numerical prediction of the next TCO is currently published. Factual movement against the previous official TCO remains available; the code and historical research are retained for recalibration. This suspension does not affect the separate parallel/P2P forecast.

The arrow compares the displayed TCO with the previous official publication identified beside it. Up means an increase, down a decrease and horizontal no change. The change in Bs and percent is factual, not a forecast or an intraday P2P movement; check validity to distinguish an announcement from an already applicable value.

The earlier experimental research used Ridge regression, chronological walk-forward tests and a persistence baseline. Its reconstructed pre-RD142 history and calibration are retained for research, not presented as an active numerical forecast. The separate experimental P2P forecast remains subject to its own validation and availability.

Official BCB rate

The TCO is one official value published by the Central Bank of Bolivia. RD 142/2026 defines a median weighted by USD amount of dollar purchases made by Bancos Múltiples, Bancos PYME and Banco Público with their clients and the BCB. Transactions between financial institutions are excluded: in the included transactions, the bank buys USD and pays bolivianos.

The reporting window runs from 17:01 on the previous business day to 17:00 on the reporting business day. Banks report to ASFI by 17:30; ASFI sends the information to the BCB by 17:40. All times are Bolivia time.

The BCB publishes the TCO on business days at 23:30, effective the following day. Friday's publication applies on Saturday, Sunday and Monday; holidays use the publication from the preceding business day. The site displays the source's validity interval and distinguishes an announced value from one already in effect.

The time this site first observes a publication does not establish the exact time the BCB published it. Validity and observation times are kept separate; we do not assign an exact publication time unless the source confirms it.

RM 245 establishes the flexible exchange-rate policy framework. The current operational methodology is RD 142, which repealed the regulation approved by RD 88. RD 88's weighted average and sell reference belong to historical context. The site does not derive current auxiliary buy or sell references as TCO minus or plus Bs 0.10; each bank publishes its own quotations and terms, subject to applicable rules.

The earlier fixed 6.86/6.96 quotations remain historical records for that period.

BCB referential rate — historical series

The BCB referential rate is retained as a separate historical series, with no new observations. It does not replace the current TCO and should not automatically be used as today's card or payment rate. For a current transaction, confirm the quotation, date, fees and terms with your bank or provider.

The referential rate is obtained as a series separate from the official rate. When the BCB publishes referential buy and sell values, the site preserves those sides separately.

This family does not replace the official BCB rate and is kept separate from market signals such as the parallel dollar.

In the historical BCB description, it was calculated from effective buy and sell operations conducted by financial-intermediation institutions with their customers.

The site's historical referential coverage begins on December 1, 2025. Earlier dates may show no value for this family and are not filled with the official rate.

Estimated parallel rate

The parallel rate is a non-official market reference based on public P2P offers, with distinct buy and sell sides. It is neither the BCB's TCO nor necessarily the exact cash quotation offered by a street exchange dealer. Its methodology and observation schedule are independent of the official publication.

P2P is a non-official market signal. The current methodology uses public platform and open-source data, primarily public USDT/BOB information from Binance P2P for the current signal and the public Dólar Blue Bolivia source for imported historical coverage.

This signal can move more frequently than institutional BCB publications and should not be interpreted as an official quotation.

Historical P2P records are reviewed before daily summaries are calculated. A daily lookup may preserve first, last, average, minimum, and maximum values to show movement within the day.

Historical lookup and chart

For long-range charts, the P2P line uses the daily average sell rate. This provides a consistent daily point when dates contain different numbers of records.

Official, referential, and P2P lines remain separate. If a source has no value for a date, the site does not invent a replacement from another exchange-rate reference.

Source labels, effective dates, publication times, and calculation notes matter because they distinguish official/legal references from market observations.

The chart is a historical comparison and context tool. It is not a prediction.

Historical coverage

The historical database available on the site begins on July 21, 2024. Each exchange-rate series can begin on a different date because its source, publication structure, and availability differ.

The date lookup reports what is available in the stored data. A missing value means the relevant family has no stored value for that date; it does not mean another family should be substituted.

Sources consulted

Limitations and transparency

Sources can have different schedules, publication methods, cutoffs, and availability. The series therefore do not always begin on the same date or update at the same frequency.

Banks, platforms, exchange houses, and market sources can show different values because of fees, spreads, limits, settlement timing, and internal rules. Those differences do not make P2P an official quotation or make the referential rate an automatic substitute for the official rate.

Public P2P sources can change availability, structure, or publication format. When that happens, the methodology must be reviewed before new values are compared with historical data.

The site aims to identify each source and known transformation clearly. It does not replace missing values with a different exchange-rate reference or present P2P as official.

Information is referential and informational. The site does not buy, sell, arrange, broker, or recommend operations involving USD, BOB, USDT, or other assets.

The site does not assume the flexible regime will automatically solve dollar shortages, inflation, or the parallel-market gap.