rustledger rustfava PTA Standards
PTA Standards

Plain Text Accounting

PTA Standards

Formal specifications for Beancount, Ledger, and hledger formats.

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Beancount SpecCore Model

Format Status

Current specification progress

Beancount v3

Draft

Complete grammar, AST schema, and semantic rules.

Ledger

Planned

Specification work planned for future release.

hledger

Planned

Specification work planned for future release.

Goals

What we're building towards

Precision

Unambiguous specifications that enable correct implementations.

Testability

Comprehensive conformance test suites for validation.

Interoperability

Enable format conversion and tool compatibility.

Community

Open evolution through RFCs and community input.

What's Included

Comprehensive tooling for implementers

EBNF & ABNF Grammars

Formal grammar definitions for parsing

AST Definitions

JSON Schema and Protocol Buffer schemas

Tree-sitter Grammars

Editor integration for syntax highlighting

Test Vectors

Conformance test suites for validation