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zfin/docs/reference/config/transaction-log-srf.md
Emil Lerch 74fc219afd
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2026-06-22 14:53:53 -07:00

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transaction_log.srf reference

transaction_log.srf is an optional sibling of portfolio.srf that declares real-world transactions which change how zfin interprets the portfolio diff. In v1 it holds exactly one kind of record: transfers -- money you moved between accounts you own.

Why it exists

zfin contributions infers "new money" by diffing your portfolio over time. A plain diff can't tell an external contribution apart from an internal transfer, so moving (say) $50k from one account to another would otherwise be double-counted: the receiving account's new lots look like contributions while the sending account's removed lots are ignored. Declaring the transfer here cancels that out.

Missing file -> the matcher is a no-op; nothing changes.

File format

One record per destination. A record pins the money to exactly one landing spot: either a specific lot (SYMBOL@open_date) or the literal token cash. A sweep that lands in several lots becomes several records sharing the same (date, from, to) but differing in dest_lot.

#!srfv1
# Simple cash transfer between two accounts
transfer::2026-05-02,type::cash,amount:num:5000,from::Sample IRA,to::Sample Brokerage,dest_lot::cash

# Transfer that was invested into a single stock lot on arrival
transfer::2026-05-02,type::cash,amount:num:7000,from::Sample IRA,to::Sample Brokerage,dest_lot::VTI@2026-05-03

# Sweep into a basket plus a cash residual (two records, same date/from/to)
transfer::2026-05-02,type::cash,amount:num:145300,from::Sample IRA,to::Sample Brokerage,dest_lot::VTI@2026-05-03
transfer::2026-05-02,type::cash,amount:num:4700,from::Sample IRA,to::Sample Brokerage,dest_lot::cash

Fields

Field Type Required Description
transfer date Yes Transfer date (YYYY-MM-DD); the record key.
type string Yes cash or in_kind (see v1 scope below).
amount num Yes Dollar amount transferred to this destination.
from string Yes Source account name (matches an account:: in your portfolio).
to string Yes Destination account name.
dest_lot string Yes Where it landed: cash, or SYMBOL@YYYY-MM-DD for a specific lot.

v1 scope and limits

  • Only transfer:: records. Buys, sells, and dividends stay inferred from the portfolio diff.
  • Only type::cash is wired into the contributions classifier. type::in_kind parses (the format is forward-compatible) but the matcher rejects it with an "in-kind transfers not yet supported" message.
  • Forward-looking only -- there is no historical reconstruction.

See also

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