FTB-C000219 / Financial concept

Transaction Cost

Transaction cost is the explicit and implicit economic cost associated with executing a trade.

Also known astrading costexecution cost

Intermediate 1 linked topicPublished

Definitions

In plain terms

It can include commissions, fees, taxes, bid-ask spread, price impact, delay, and opportunity cost depending on the model.

Technical

A cost model declares components, units, order size, participation, spread convention, impact model, venue and currency, market state, timing, and calibration source.

Scope

A single basis-point assumption is a model input, not a universal cost for every security or order.

Examples

  • A governed methodology records transaction cost with its source, cutoff, units, parameters, and effective version.

Common misconceptions

  • Transaction Cost does not have one universal implementation without the declared methodology, data basis, and constraints.

Concept relationships

Related

Required by

Where this concept is used

Tutorials planned

These catalogued topics use this concept, but their complete build has not shipped yet.

  • D03-F06-A08 Prerequisite

Evidence and governance

  1. Fintech Builder Glossary Definition Contract The Fintech Builder · internal governed contract

    Supports: preferred label, short definition, technical definition

    Limits: Defines governed platform behavior rather than claiming these policies are universally prescribed by external McClellan methodology.

Reviewed by
fintech-builder-batch-004
Last reviewed
2026-07-27
Next review
2027-07-27
Record status
published
Written by

Fintech engineer building market-data and financial systems, and the author of every article, glossary record, and reference implementation on The Fintech Builder.