Holding without an intermediary does not put a holding outside the reporting regimes, but it does change how they apply. Several of those rules are written around accounts and the institutions that keep them, so a wallet you control yourself sits awkwardly inside them. The answer turns on how the holding is characterised and whether the rule in question reaches property as well as accounts. What changes for certain is the evidence. Nobody is going to send you a statement, so the record you keep is the record that exists, and it should be built as you go rather than at the year end.
Self-custody — meaning in cross-border tax
Self-custody explained: its meaning in cross-border practice, and why it matters to your filing.
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Holding crypto without an intermediary, which is treated differently from a custodial holding under several reporting regimes.
Why it matters
The rules here were written for other things, so the interesting questions are characterisation and timing rather than rate. Documenting the position when it is taken is what makes it defensible later.

The same word, two meanings
Where two systems classify the same thing differently, the tax result can be worse than either system intends — a deduction with no matching inclusion, or income taxed in two hands. Anti-mismatch rules now neutralise several of those outcomes rather than leaving them available.
Where it shows up in practice
These pages are where Self-custody stops being terminology and starts changing a number.
How to use this
The question worth asking is not what Self-custody means but whether it applies to you this year. That is a computation on your facts. Bring last year's returns and we will tell you what is missing.
If the term has come up because something has already been filed, the useful question is which years are still open. That answer changes what can be corrected and what can only be explained.
Reviewed against current guidance for the 2025 and 2026 filing seasons by Udit Gupta, International Tax, Cross-Border Tax & Transfer Pricing Expert, Legal Quotient Consultants. General information, not advice for your circumstances — call our 24-hour helpline to discuss your own position.
Where international tax accountant comes into this file
The subject here is self-custody, which is what people mean when they search for international tax accountant. This page covers who it applies to, the filings it produces, and the fixed fee agreed before work begins.
Files that look like this one
Building a cost base for a long held personal wallet
The client had held coins at an address of their own for years, through several acquisitions and one change of device, with no platform statement anywhere in the file. We reconstructed the acquisitions from the chain and matched them to bank entries where money had moved through an account, then set out the method used for the earliest holdings, where the evidence ran out. The engagement produced a cost base schedule with its assumptions on the face of it, and a filing position the client can support if the earliest entries are ever questioned.
A transfer between own addresses read as a disposal
A prior return had treated a movement out of a trading account as a sale, because the platform export showed a withdrawal and nothing showed the receipt. The holding had simply moved to an address the client controlled. We evidenced both sides of the movement, showed the timing, and set out why no ownership had changed. The engagement produced an amended position for the year, a supporting schedule pairing each outgoing transfer with its matching receipt, and a record-keeping routine that stops the same reading arising again.
Deciding whether a self-custodied holding had a location
The client needed to know whether a holding kept on their own hardware fell within a reporting regime built around accounts held abroad. The coin was not the question. We worked through what the regime reaches, what the arrangement actually is when there is no institution in the middle, and how the same facts would be read under the other system the client files in. The engagement produced a written characterisation, the reporting that followed from it, and a note of what would have to change for the answer to change.
A lost seed phrase and the position that followed
The client could no longer reach a holding at an address they still owned. The question was not sentiment but timing: whether anything had happened for tax purposes, when it happened, and what evidence existed either way. We assembled what the chain showed, documented the circumstances of the loss while the detail was still fresh, and set out the position and its weaknesses in writing. The engagement produced a contemporaneous record and a filing that states what is known and what is asserted, rather than a silence that would have to be explained later.
Moving out of custodial accounts before a change of residence
The client was leaving one country for another and wanted holdings off platforms before the move. The order of operations mattered more than the mechanics. We set out which events the departing system would treat as falling in its own period, what the arriving system would take as the starting point, and what evidence each would want from the other side of the date. The engagement produced a sequenced plan, the records to support each step as it happened, and filings in both systems built on the same set of facts.
An executor establishing access to a wallet after a death
The estate included a holding nobody but the deceased had ever touched, and the executor's first problem was access rather than arithmetic. There was no institution to write to and no account on which anyone could be recognised. We documented how the keys were located, what was done to establish that the executor and nobody else controlled the address from that point, and the safeguards applied while the holding was moved. The engagement produced a contemporaneous record of how control passed to the estate, the reporting that followed from it, and a written account for the beneficiaries of a holding no third party could confirm had ever existed.
Treaty Relief Claimed on a Cross-Border Estate
The estate article can extend a proportionate credit where the two systems would otherwise both tax the same asset. Claiming it requires a valuation and a disclosure the estate may not expect to make.
Read how this one runsA US Citizen Settled in India, Filing on Both Sides
Residence in India and citizenship in the United States produce two annual returns for one income. The order decides the credit, and the Indian financial year and the US calendar year have to be reconciled before either is prepared.
Read how this one runsAll case studies — every published engagement in one place.
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Property is taxed where it sits, which is the one rule no treaty overrides. What the treaty does decide is the credit, the rate on the rent and what happens on the sale — and the clearance certificate on a disposition is applied for before closing, not after the buyer has already held the money back.
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Questions that come up on Self-custody
A device is not an account, and that is usually where the analysis starts rather than where it ends. Rules written for accounts look for an institution holding something for you, and self-custody by definition has no such institution. But the regimes do not all stop at accounts, and some reach property generally, wherever it sits and whoever holds it. So the question is which rule is being asked about. Take the position, write down why, and keep the working. A position recorded at the time is worth considerably more than the same position explained after a query has arrived.
From the chain and from your bank. The record on the chain shows when a holding arrived at an address you control and what came with it; the bank record shows what left your account and when. Between the two, most acquisitions can be evidenced without a platform statement. Where coins were acquired before you started keeping records, the cost base is reconstructed and the method used is stated on the schedule. The habit worth forming is a note at each acquisition: the address, the date, the consideration and the source. It takes a minute then and hours later.
Moving a holding between places you control is generally a change of custody rather than a change of ownership, and a transfer to yourself is not the same event as a sale. The difficulty is evidential rather than legal. On a schedule built from platform exports, an outgoing transfer looks exactly like a disposal, and it will be read as one unless the matching receipt at your own address is shown beside it. So the pair should be recorded together, with both addresses and the dates, at the time it happens.
Control and beneficial ownership are different questions, and reporting usually follows the second. A shared key arrangement can mean two owners, one owner with a second signatory, or a holding on trust for someone else entirely, and those produce different reporting for different people. Because nothing about the arrangement is written down anywhere by default, the documentation is yours to create. We set out who contributed what, who bears the risk, and what each party is entitled to, and then report on that footing rather than on who happens to hold the device.
Addresses, dates, counterparties where they are known, the consideration on each side, and the reason for each movement. Keep transfers between your own addresses labelled as such, because an unexplained outgoing transaction reads as a disposal. Keep the source of any valuation used, including which market you took it from. Keep the original acquisition evidence even when the holding has since moved on. The test to apply is a simple one: could somebody who has never seen your wallet follow the schedule from the first acquisition to the year end without having to ask you a question.
Sending your own funds to India is a transfer of capital, not income, so the remittance itself is not taxed. What is taxable is income the money then earns in India — interest, rent, capital gains — under the rules for the account type it sits in. Sending money out of India is the direction that needs certification before the bank will act. See NRE, NRO and FCNR accounts.
Foreign income is income sourced outside the country you are filing in — where the work was done, where the property sits, where the payer is resident, depending on the type. A foreign tax, for credit purposes, is a levy imposed by another country that functions as an income tax and that you were legally required to pay. Consumption taxes, property taxes and most social contributions are not, however real the cost. Sourcing is decided by rule, not by which bank received it. See the foreign tax credit.



