MiscFeeAmt (FIX tag 137)

AmtFIX 4.4FIX 4.2

MiscFeeAmt (tag 137) is an Amt field defined in FIX 4.4 and FIX 4.2. It appears in 9 message types, always optionally.

At a glance

Tag: 137
Name: MiscFeeAmt
Datatype: Amt (float)
Dialects: FIX 4.4 and FIX 4.2
Messages: 9

What the specification says

Miscellaneous fee value

Descriptions are quoted from the FIX Orchestra sources under the Apache 2.0 licence.

A real message using tag 137

TradeCaptureReport · FIX 4.4

Tag	Field	Wire value	Meaning
8	BeginString	FIX.4.4
9	BodyLength	199
35	MsgType	AE	Trade Capture Report
49	SenderCompID	BOARTEAM
56	TargetCompID	COUNTERPARTY
34	MsgSeqNum	2
52	SendingTime	20240101-12:00:00.000
571	TradeReportID	EXAMPLE
570	PreviouslyReported	N	not reported to counterparty
32	LastQty	1000000
31	LastPx	1.09210
75	TradeDate	20240101
60	TransactTime	20240101-12:00:00.000
552	NoSides1 entry	1	repeating group
54	Side	1	Buy
37	OrderID	ORD-10042
136	NoMiscFees2 entries	2	repeating group
137	MiscFeeAmt	125000.00
137	MiscFeeAmt	125000.00
10	CheckSum	222

Edit and decode it yourself

Shown with | separators for readability. On the wire FIX uses SOH (0x01), an invisible control byte — and because BodyLength and CheckSum are computed over the actual bytes, the two forms have different checksums. Both are valid and both decode here.

Open in the full decoder →

Generated from the FIX 4.4 dictionary and verified at build time: it parses and validates with no issues. Open the decoder to try your own message.

Where tag 137 appears

Requiredness is a property of the message, not of the field: the same tag can be optional in one message and conditionally required in another.

Message	MsgType	FIX 4.4	FIX 4.2	Where in the message
AllocationInstruction	J	Conditional	Optional	inside AllocGrp › MiscFeesGrp
AllocationReport	AS	Conditional	—	inside AllocGrp › MiscFeesGrp
CollateralAssignment	AY	Conditional	—	inside the MiscFeesGrp component
CollateralReport	BA	Conditional	—	inside the MiscFeesGrp component
CollateralRequest	AX	Conditional	—	inside the MiscFeesGrp component
CollateralResponse	AZ	Conditional	—	inside the MiscFeesGrp component
Confirmation	AK	Conditional	—	inside the MiscFeesGrp component
ExecutionReport	8	Conditional	—	inside the MiscFeesGrp component
TradeCaptureReport	AE	Conditional	—	inside TrdCapRptSideGrp › MiscFeesGrp

Wire format

A decimal monetary amount, in the currency named by the message's currency field. @boarteam/fix parses the value as a number and reports parse/invalid-float when it does not lex as one; the raw string is kept so precision and trailing zeros are never lost.

Read tag 137 in TypeScript

decode.tsts

import { createFixEngine } from "@boarteam/fix";import { dictionary } from "@boarteam/fix-dict-fix44";const fix = createFixEngine(dictionary);const { message, issues } = fix.parse(raw);const field = message.fields[137];field?.name;   // "MiscFeeAmt"field?.raw;    // the verbatim wire stringfield?.value;  // coerced to a number

Decode this in your own code

The same engine that produced the decoded example above is an Apache-2.0 npm package with zero runtime dependencies. It runs in Node and in the browser, and parse() returns problems as data instead of throwing.

npm i @boarteam/fix @boarteam/fix-dict-fix44

Try the decoder Source on GitHub