TotalAccruedInterestAmt (FIX tag 540)

AmtFIX 4.4FIX 5.0 SP2

TotalAccruedInterestAmt (tag 540) is an Amt field defined in FIX 4.4 and FIX 5.0 SP2. It appears in 2 message types, always optionally.

At a glance

Tag: 540
Name: TotalAccruedInterestAmt
Datatype: Amt (float)
Dialects: FIX 4.4 and FIX 5.0 SP2
Messages: 2

What the specification says

FIX 4.4

*** DEPRECATED FIELD - See "Deprecated (Phased-out) Features and Supported Approach" *** Total Amount of Accrued Interest for convertible bonds and fixed income

FIX 5.0 SP2

Total Amount of Accrued Interest for convertible bonds and fixed income

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

A real message using tag 540

AllocationInstruction · FIX 4.4

Tag	Field	Wire value	Meaning
8	BeginString	FIX.4.4
9	BodyLength	143
35	MsgType	J	Allocation Instruction
49	SenderCompID	BOARTEAM
56	TargetCompID	COUNTERPARTY
34	MsgSeqNum	2
52	SendingTime	20240101-12:00:00.000
70	AllocID	EXAMPLE
71	AllocTransType	0	New
626	AllocType	1	Calculated (includes MiscFees and NetMoney)
857	AllocNoOrdersType	0	Not specified
54	Side	1	Buy
53	Quantity	1000000
6	AvgPx	1.09215
75	TradeDate	20240101
540	TotalAccruedInterestAmt	125000.00
10	CheckSum	001

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 540 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 5.0 SP2	Where in the message
AllocationInstruction	J	Optional	Optional	directly on the message body
AllocationInstructionAlert	BM	—	Optional	directly on the message body
AllocationReport	AS	Optional	Optional	directly on the message body

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 540 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[540];field?.name;   // "TotalAccruedInterestAmt"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