Moving From BC to California: Does California Tax My RRSP?

Yes, in the accrual years, and that’s the mismatch almost nobody warns you about. The treaty defers US tax on income growing inside your RRSP until you take it out, and for federal purposes an eligible individual gets that deferral with no form to file. California doesn’t follow it. The Franchise Tax Board says so in its own publication: the treaty deferral doesn’t apply for California income tax purposes, and a California resident reports the RRSP’s earnings in the year they’re earned.

Who is this page for, and what does it hand to other pages?

You’re leaving British Columbia for California and you’re taking Canadian registered accounts with you. This page covers the California layer, which is the one that behaves differently from everything you’ve read about the federal side of the move. It doesn’t re-run the federal answers, because other guides already cover those.

• The federal day-one treatment of an RRSP and a TFSA lives in what happens to your RRSP and TFSA when you move to the US.
• The arrival-year federal return, the day count and the dual-status question live in how US taxes work your first year.
• The eventual drawdown, and the 25 versus 15 per cent question, live in lump sum or periodic RRIF payments.
• The Canadian exit computation lives in Canada’s departure tax.
• The mirror direction, a Canadian resident holding US retirement money, lives in getting the 15 per cent treaty rate on an IRA or 401(k).

What’s left is the part those pages hand off. The RRSP/TFSA guide gets as far as saying “state rules differ from the treaty, so check how yours treats an RRSP,” and stops. The TN guide says states write their own residency rules and uses New York as the illustration. California is the answer to both of those sentences, and the FTB has published its position on the RRSP in so many words.

What happens, and in what order?

Five things run inside one BC-to-California move year, and only one of them is the federal return everyone talks about. Canadian residence ends, British Columbia’s share of that ending rides on the federal number, the US federal return opens, California starts its own residency clock on its own test, and the RRSP quietly becomes a California reporting item.

Step	What happens	Trigger	Where it lands	Guide
1	Canadian residence ceases and most property is deemed sold at fair market value	The date Canadian residence ends, on the facts	Final Canadian T1 for the departure year	Canada’s departure tax
2	BC tax is charged on the same taxable income the federal Act computes	Being resident in BC on what BC deems the last day of the taxation year	The BC schedules of that same T1, generally	Section below
3	US residency starts and the federal return opens, dual-status or otherwise	The federal residency starting date, which is its own test	Form 1040	First-year US taxes
4	California residency starts, on California’s own test, which can differ from step 3	Presence for other than a temporary or transitory purpose, or domicile	Form 540NR for a part-year year	Sections below
5	RRSP earnings become California income as they accrue, though they stay deferred federally where the eligible-individual conditions hold	Being a California resident while the plan earns	Schedule CA, column C	Sections below

Step 5 is the one that surprises people, because nothing in the federal system prompts it. Your 1040 shows no RRSP income, where the eligible-individual conditions hold. Neither does anything Canada sends you, since ITA 146(4) opens with “Except as provided in subsection 146(10.1)” and then says “no tax is payable under this Part by a trust on the taxable income of the trust for a taxation year” while the trust is governed by an RRSP, so for an ordinary plan there’s no Canadian tax on the plan’s internal income to report on. The same subsection carves out a trust that has borrowed money and a trust that has carried on a business, neither of which describes a normal RRSP. The only return the number belongs on is the California one, and the only place it can come from is the plan statements.

Does California tax my RRSP while it’s just sitting there growing?

Yes, for the period you’re a California resident. The FTB publishes this by name. Publication 1001, in the pensions and annuities table, carries a paragraph headed “Canadian Registered Retirement Savings Plans (RRSP)” that refuses the treaty deferral for California purposes and tells the resident to pick the earnings up annually. The publication itself offers no California route to the same deferral.

“Under both federal and California law, the RRSP does not qualify as an IRA and does not receive IRA treatment. The federal treaty that allows taxpayers to elect to defer taxation on their RRSP earnings until the time of distribution does not apply for California income tax purposes. California residents must include their RRSP earnings in their taxable income in the year earned.” (FTB Publication 1001, 2025)

The same publication says where the number goes: “Enter on Schedule CA (540), Part I or Schedule CA (540NR), Part II, Section A, line 2, line 3, or line 7a, column C, the earnings from the RRSP.” Column C is the additions column, which is the FTB telling you this is income federal law left out and California wants back in. The 2024 edition of the same publication carries the same paragraph in nearly the same words, so this isn’t a drafting quirk of one year’s booklet.

One thing this doesn’t say, and it matters that it’s missing. It doesn’t say what your California basis in the plan is once you’ve paid California tax on earnings year after year. That’s a live question at withdrawal, and the same publication answers it expressly for a health savings account it taxes on exactly the same accrual mechanic, writing that “the taxpayer has a California basis in the HSA account.” The RRSP paragraph two entries above carries no such sentence. Don’t read the silence either way; read it as a reason to get your position written down before the first withdrawal rather than after.

Why doesn’t the treaty protect the RRSP in California?

Because the treaty says which taxes it applies to, and state income taxes aren’t among them. Article II of the Convention lists the covered taxes, and the operative version of paragraph 2 is the one the Third Protocol substituted in 1995 rather than the 1980 original. On the US side it reaches “the Federal income taxes imposed by the Internal Revenue Code of 1986,” plus four narrow carve-ins covering five taxes: the accumulated earnings tax and the personal holding company tax together in the first, then private foundation excise, social security taxes and estate tax.

“2 Notwithstanding paragraph 1, the taxes existing on March 17, 1995 to which the Convention shall apply are: (a) In the case of Canada, the taxes imposed by the Government of Canada under the Income Tax Act; and (b) In the case of the United States, the Federal income taxes imposed by the Internal Revenue Code of 1986. …” The four carve-ins follow in the same paragraph. (Third Protocol, Schedule IV to the Canada-United States Tax Convention Act, 1984)

California reads that the same way, and says so. Publication 1031 tells a taxpayer, “Generally, unless the treaty specifically excludes the income from taxation by California, the income is taxable,” and it puts the rule in general terms a paragraph later: “Tax treaties between the United States and other countries which expressly limit their application to federal income taxes do not apply to California.” Publication 1001 says it again from the other end, that “California is not affected by U.S. treaties with foreign countries unless they specifically apply to state income taxes.”

The deferral itself is a federal instrument all the way down. Article XVIII(7), in the operative text the Fifth Protocol substituted in 2007, lets a beneficiary “elect to defer taxation in the first-mentioned State,” and the first-mentioned State here is the US. Rev. Proc. 2014-55 then treats an eligible individual as having made that election already, and its own words are that the election defers “current U.S. income taxation.” Nothing in either instrument speaks to Sacramento.

What happens to my TFSA in California?

Your TFSA is taxable in California for the resident period, on the ordinary rule rather than a special one. California taxes a resident on income from every source, so the interest, dividends and realized gains inside a TFSA sit in California income as they arise. The RRSP mismatch doesn’t repeat here, because there’s no federal deferral for California to decline to follow. Both levels tax the growth.

• Federal: the treaty deferral runs to an arrangement “operated exclusively to provide pension or employee benefits,” and a general-purpose savings account is a hard fit for that description. The federal analysis, including the trust question, sits in is a TFSA a foreign trust.
• California: Publication 1031 says “Residents of California are taxed on ALL income, including income from sources outside California,” and the FTB publishes no TFSA-specific paragraph in its adjustments guide.
• Reporting: FBAR goes to FinCEN and Form 8938 rides with the federal return. Those are federal filings, and what they cost to prepare is covered in what TFSA reporting actually costs on a US return.

Be careful with how far you push that symmetry. The FTB naming the RRSP and staying silent on the TFSA isn’t a signal about the TFSA one way or the other. The RRSP needed a paragraph because federal law lets the income out and California wanted it back; a TFSA’s income is already in federal gross income, so there’s no adjustment column to write about. The practical result for a California resident is the same, which is annual tax on the growth, and the route there is different.

When does California decide I’m a resident?

On its own test, which is not the federal one and doesn’t wait for it. California’s definition is two limbs in Revenue and Taxation Code section 17014: anyone in the state for other than a temporary or transitory purpose, and anyone domiciled in California who’s outside it temporarily. Neither limb counts days the way the federal substantial presence test does.

Question	Federal	California
What decides residency	The substantial presence day count and its exceptions, covered in the first-year guide	Presence for other than a temporary or transitory purpose, or California domicile (R&TC 17014)
Is there a day presumption	Not in the same form	Yes, more than nine months in the state in a taxable year raises a presumption of residence, which the statute says can be rebutted (R&TC 17016)
Does the treaty tie-breaker apply	Yes, where both countries claim you	Generally no, since the FTB says treaties limited to federal income taxes don’t reach California (Pub 1031)
What income is reached	Worldwide once you’re a resident, US-source while you’re not	All income while a California resident, California-source income while not (R&TC 17041(i))
Can the two answers differ	Yes, and the divergence runs in the direction of more California filing rather than less	The FTB says that if you are a resident of a foreign country and perform services in California and/or receive income from California sources, you “may have a California income tax filing requirement even if you do not have a federal income tax filing requirement” (Pub 1031)

The FTB’s own framing of the test is closest connections. Publication 1031 opens its guidance with “the underlying theory of residency is that you are a resident of the place where you have the closest connections,” then lists factors: time in California against time elsewhere, where your spouse and children are, your principal residence, your driver’s licence, vehicle registration, professional licences, voter registration, banks, where your financial transactions originate, your doctors and advisers, your social ties, your real property, and how permanent the California work assignment is. The publication is explicit that “it is the strength of your ties, not just the number of ties, that determines your residency” and that “no one factor is determinative.”

There’s a statutory reason the two systems can drift apart. R&TC 17024.5(b) adopts the Internal Revenue Code for California purposes but switches off a list of references when it does, and item (11) on that list is “Nonresident aliens.” So the federal machinery that produces a dual-status year has no California counterpart to operate. Publication 1001 says the same thing operationally: a federal 1040-NR “requires that only United States source income be reported. California requires the reporting of adjusted gross income from all sources.”

Does the 546-day safe harbour help me?

No, because it runs the other direction. The safe harbour in R&TC 17014(d) is a rule for a person domiciled in California who leaves it under an employment contract, treating an absence of at least 546 consecutive days as other than temporary or transitory. Someone arriving from British Columbia is on the opposite side of that rule and gets nothing from it.

“(d) For any taxable year beginning on or after January 1, 1994, any individual domiciled in this state who is absent from the state for an uninterrupted period of at least 546 consecutive days under an employment-related contract shall be considered outside this state for other than a temporary or transitory purpose.” (R&TC 17014(d))

It’s worth knowing anyway, for two reasons. The first is that people arriving in California often meet someone who used it and repeat the number back as though it were a general 546-day rule about California residency, which it isn’t. The second is that it may matter later if a California assignment ends and you go somewhere else on contract.

The conditions on it are tight. It’s unavailable to an individual with income from stocks, bonds, notes or other intangible personal property over $200,000 in any taxable year the contract is in effect, tested on each spouse separately. It’s also unavailable where the principal purpose of the absence is avoiding the tax. Return visits totalling no more than 45 days in a taxable year are disregarded. And the FTB is direct that for anyone outside the safe harbour, residency runs on facts and circumstances, with the determination unable to rest solely on an individual’s occupation, business or vocation.

Will California give me credit for the Canadian tax?

No, and this is where the mismatch gets expensive rather than merely annoying. California allows no foreign tax credit. Publication 1031 states it in one line, and R&TC 17024.5(b)(7) is the statutory root, switching off the Internal Revenue Code’s references to “Foreign income taxes and foreign income tax credits” when California applies the Code. The federal foreign earned income exclusion is switched off the same way.

“California does not allow a foreign tax credit or a foreign earned income exclusion. If you claimed the foreign earned income exclusion on your federal return, include the amount of your foreign earned income exclusion on Schedule CA (540NR), Part II, Section B, line 8d, column C.” (FTB Publication 1031, 2025)

Line those two rules up and you can see the shape of the problem. California taxes the RRSP’s growth as it accrues and gives no credit for Canadian tax, while Canada charges tax on the way out: ITA 212(1) makes a non-resident pay 25 per cent on amounts paid from Canada, and paragraph (l) names RRSP payments, before any treaty reduction. The federal system smooths that with the deferral first and a foreign tax credit second. California has neither instrument, so a California resident is exposed to both sides on their own timelines, in different years, with no mechanism inside the California return to connect them. What that costs you turns on your balance, your holding period and how the withdrawal is eventually structured, and the structuring half of it belongs to the lump-sum versus periodic decision.

How does California tax the year I arrive?

On a part-year return, with a rate borrowed from your whole year. A part-year filer uses Form 540NR, and California taxes all income received while you were a resident plus California-source income for the rest of the year. The sting is in how the rate is set: California computes the tax on your entire income for the year as though you’d been a resident all along, turns that into an effective rate, and applies that rate to the California slice.

“If you are a nonresident or a part-year resident, you determine your California tax by multiplying your California taxable income by an effective tax rate. The effective tax rate is the California tax on all income as if you were a California resident for the current taxable year … divided by that income.” (FTB Publication 1100, 2025)

The statute says it the same way. R&TC 17041 defines the taxable income of a part-year resident as “all items of gross income and all deductions, regardless of source” for the resident part of the year, and California-source items for the rest, then charges tax at a rate equal to the tax on “the entire taxable income … as if the nonresident or part-year resident were a resident of this state for the taxable year,” divided by that income.

Read those together and the consequence lands. BC salary for work you did in British Columbia before the move isn’t in California’s tax base. It still raises the rate California charges on everything after you land.

What changes because California is a community property state?

Income a spouse earns while domiciled in California is generally community income, and each spouse owns half of it. The FTB puts the division of that income on the domicile of the spouse who earned it where separate returns are filed, and its own worked example has half of one spouse’s wages taxable to California because the other spouse is a California resident. For a cross-border couple that changes who reports what.

“Except as otherwise provided by statute, all property, real or personal, wherever situated, acquired by a married person during the marriage while domiciled in this state is community property.” (California Family Code section 760)

Two features of that sentence do the work. It reaches property “wherever situated,” so a Canadian account isn’t outside it by virtue of sitting in Canada. And it applies to property acquired “while domiciled in this state,” so the hinge is the domicile date rather than the arrival date or the federal residency date. The FTB defines domicile as the place you establish yourself and your family “with a present intention of making it your true, fixed, permanent home and principal establishment,” which is a different question from where you’re living this month.

Where it bites hardest is a split couple. If one spouse lands in California and the other stays in British Columbia for a stretch, the characterisation of each side’s income and the division of it between two returns is its own piece of work, and it interacts with the federal filing-status choice covered in what to do when your spouse stayed in Canada. This page states that the issue exists and how it’s framed. It does not work through the characterisation, which is a fact-driven exercise and deserves its own treatment.

Do I owe British Columbia anything on the way out?

British Columbia doesn’t charge a departure tax of its own. The deemed disposition on ceasing Canadian residence is federal, imposed by section 128.1(4) of the Income Tax Act, and BC’s share rides on the same taxable income figure rather than adding an exit charge on top. What BC does have is a rule about which year the bill lands in, and it’s worth a look before you assume the province drops away when you fly.

“An income tax must be paid as required in this Act for each taxation year by every individual (a) who was resident in British Columbia on the last day of the taxation year, or (b) who, not being resident in British Columbia on the last day of the taxation year, had income earned in the taxation year in British Columbia as defined in section 4 (1).” (BC Income Tax Act, s.2(1))

The BC Income Tax Act charges tax on an individual “who was resident in British Columbia on the last day of the taxation year,” and its section 1 deems that phrase, for someone who resided in Canada during the year but ceased to before year end, to mean “the last day in the taxation year on which the individual resided in Canada.” The same section defines “taxable income” as having “the same meaning as in the federal Act,” and section 4.1 charges the BC rates on that number. So the departure-year gain flows into the BC calculation because it flows into federal taxable income first.

What the deemed sale actually reaches, which property is carved out of it, and the elections that move the timing all belong to the departure tax pillar, and the forms and worked math to the T1161 and T1243 guide. If a Canadian corporation is coming with you, that changes character on the way out too, and what happens to a Canadian corporation when you move carries it.

What order do the three returns go in?

Canada first, then federal, then California, because each one feeds the next and the California return needs numbers the other two produce. Trying to file California early is how the RRSP adjustment gets missed, since nothing on either of the other returns prompts for it. The deadlines don’t line up either, which usually means at least one extension.

Return	Deadline for a calendar year	Why it goes where it does
Final Canadian T1	April 30 generally, or June 15 where the individual carried on a business in the year (ITA 150(1)(d))	It fixes the departure date, the deemed sale and the Canadian tax figures everything downstream refers to
Form 1040	April 15 for a calendar-year filer (IRC 6072(a))	It sets the federal residency period and the foreign tax credit position; the RRSP earnings are deferred here where the eligible-individual conditions hold
Form 540NR	For a 2025 calendar year, April 15, 2026, with an automatic extension of up to October 15, 2026 to file, where the balance is still paid by April 15, 2026 (FTB, due dates)	It starts from federal amounts, then adds back what California doesn’t follow, including the RRSP earnings

The practical sequence inside that is short. Fix the Canadian departure date on the facts, because the BC year and the federal residency analysis both key off it. Build the federal return next, and settle the residency starting date there. Then build the California return separately: California residency on California’s test, income for the California resident period, the RRSP earnings figure from the plan statements, and the Schedule CA addition. If you’re married and one spouse is still in British Columbia, do the community-property characterisation before you split anything between two returns rather than after.

One trap sits underneath that sequence. Your California residency period and your federal residency period can be different lengths, and if they are, the California income figure isn’t a slice of the federal one. Build it from the California dates.

What does this cost, honestly?

It’s a three-return year, and it prices like one. Blue Cloud’s published starting point for a first year after a move, covering both sides of the border, is US$3,245, and the whole fee list sits on what cross-border tax help actually costs. The California layer rides inside that number, and three things push a file above it.

• A Canadian corporation coming along adds a Form 5471 and a stub-period Canadian corporate return, covered in what happens to a Canadian corporation when you move.
• A spouse who stays behind in British Columbia adds a second residency analysis and the community-property characterisation above.
• A self-directed RRSP adds real work, since the earnings figure has to be built transaction by transaction.

What actually drives the number is rarely the tax complexity. It’s whether the RRSP’s internal earnings can be built from statements you already have, whether the departure date is settled or arguable, and whether prior California returns need looking at. Those three questions are answerable before anyone quotes anything, which is what the assessment is for.

The Cross-Border Assessment is a fixed $249. It’s a written, CPA-reviewed read on your own move: your California residency dates, which accounts produce a California adjustment, what the departure year looks like, and what the returns will cost. It usually settles whether your file is the simple version before anyone spends money on the returns.

What should I do next?

Pull a full year of statements for every registered account, since the RRSP earnings figure has to be built from those and nothing else will produce it. Write down the date your Canadian residence actually ended and the facts behind it. Then decide your California residency dates on California’s test rather than assuming they match the federal ones, and check whether any California return already filed picked up the RRSP adjustment.

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.