California taxes the income earned inside a Canadian Registered Retirement Savings Plan every year, even though the federal government lets that income grow tax-deferred under the Canada–U.S. tax treaty. That is the core of California’s tax treatment of RRSPs: interest, dividends, and realized capital gains accruing inside the plan are taxable on your state return in the year they are earned, whether or not you withdraw a dollar. On top of that, you still owe the usual federal disclosures for foreign accounts, and the penalties for missing those filings dwarf the tax at stake.
Why California Won’t Follow the Federal Deferral
At the federal level, Article XVIII(7) of the U.S.–Canada Income Tax Convention lets a U.S. resident defer tax on income accruing inside a Canadian retirement plan until a distribution is actually taken. Since Revenue Procedure 2014-55, that election is automatic and no annual federal form is required to keep the deferral in place.1Internal Revenue Service. Revenue Procedure 2014-55
California decouples from that result through Revenue and Taxation Code Section 17024.5(b). Subsection (b)(6) says that IRC references to a foreign trust under Section 679 are “not applicable” for California purposes, and subsection (b)(7) excludes foreign income taxes and foreign tax credits from state conformity.2California Legislative Information. California Code RTC 17024.5 – General Provisions and Definitions The federal deferral rides on foreign-trust treatment under the Code, so when California drops that machinery, the deferral falls with it. The state views an RRSP as an ordinary foreign trust whose internal income is currently taxable to the California-resident beneficiary.
What RRSP Income California Taxes Each Year
Every item of income the RRSP generates in a calendar year is reportable. That includes interest on cash and fixed-income holdings, dividends from stocks or mutual funds, and capital gains realized when securities inside the account are sold. Each is taxed in the year the RRSP earns or realizes it, not in the year you pull money out.
Unrealized gains don’t trigger anything. A stock that rises in value but hasn’t been sold creates no California tax. The obligation attaches only to transactions the account actually books. One trap: Canadian mutual funds held inside an RRSP often distribute realized capital gains at year end even if you never placed a trade. Those distributions are California income the year they hit, so watching the account’s internal activity matters.
Tracking California Basis So You Aren’t Taxed Twice
Because California taxes the income as it accrues, the dollars you eventually withdraw have, in large part, already been taxed by the state. The way to avoid paying twice is to maintain a California cost basis from the day you become a resident.
Practitioners typically set the opening basis at the RRSP’s fair market value on the date you become a California resident. Growth before that date was never within California’s reach and shouldn’t be taxed on withdrawal. From there, basis increases by any new contributions made with funds California has already taxed, and by the annual income you report and pay state tax on. When you eventually take distributions, only the portion exceeding your tracked basis is California-taxable income.
The Franchise Tax Board will not reconstruct this for you. Without year-by-year records, proving which dollars were already taxed becomes very difficult, and the practical burden lands on the taxpayer.
Converting Canadian Dollars for the Return
All RRSP income is reported in U.S. dollars. The IRS tells taxpayers to translate foreign-currency items at the rate prevailing when the item is received, paid, or accrued, and to use whichever rate “most properly reflects your income.”3Internal Revenue Service. Foreign Currency and Currency Exchange Rates Any reasonable published daily rate works; consistency year to year is what matters.
Currency movement itself can create gains or losses. California adopts IRC Section 988 for this, so currency gains or losses on completed transactions are included in income while unrealized currency swings are not.4Franchise Tax Board. Waters Edge Manual – Chapter 8 Functional Currency When you withdraw and convert Canadian dollars to U.S. dollars, any exchange-rate gain or loss since you acquired the Canadian dollars is its own taxable event, separate from the underlying investment return.
How To Report RRSP Income on Your California Return
RRSP income goes on Schedule CA (540), which reconciles federal and state taxable income. Because your federal return excluded the deferred RRSP income, you add it back for California in Column C, the column that captures income California taxes but the federal government does not.5Franchise Tax Board. Schedule CA (540) 2025 Interest goes on the interest line, dividends on the dividends line, and realized gains on the capital gains line, based on the character of the underlying income.
Schedule CA attaches to Form 540, filed electronically through CalFile or approved software, or by paper to the Franchise Tax Board.6Franchise Tax Board. 2025 Instructions for Form 540 California Resident Income Tax Return Keep a permanent file with year-end RRSP statements, the exchange rates you used, and your running basis calculation. If the FTB ever questions how you’ve handled the account, that file is the defense.
Canadian Withholding Tax Gets No State Credit
When a non-resident of Canada withdraws from an RRSP, Canada withholds tax at the source. Lump-sum withdrawals are generally subject to 25% withholding. If the RRSP has been converted to a Registered Retirement Income Fund and taken as periodic payments, the Canada–U.S. treaty can reduce the rate to 15%.
Federally, the Canadian tax withheld can be claimed as a foreign tax credit against your U.S. tax. California offers no equivalent. Section 17024.5(b)(7) excludes foreign income taxes and foreign tax credits from state conformity, so the Canadian withholding and the California tax stack with no state-level offset.2California Legislative Information. California Code RTC 17024.5 – General Provisions and Definitions This is a real cost, and it should factor into the timing and structure of any withdrawals you make while a California resident.
RRIFs Follow the Same California Rules
Converting an RRSP to a RRIF doesn’t change the California analysis. The state treats RRIFs under the same framework: annual accrued income is currently taxable, the treaty deferral is not recognized, and Canadian withholding on distributions does not generate a California credit. Basis tracking and reporting work the same way. For California purposes, the conversion is essentially a non-event.
Federal Reporting You Still Owe
Separate from the state tax, two federal disclosures apply to RRSP holders, and the penalties for missing them run far ahead of the underlying tax.
FBAR (FinCEN Form 114)
A U.S. person whose foreign financial accounts exceed $10,000 in aggregate at any point in the calendar year must file a Report of Foreign Bank and Financial Accounts with FinCEN through the BSA E-Filing System.7Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) It is due April 15 with an automatic extension to October 15, and it is filed separately from your tax return.
Under 31 U.S.C. § 5321, a non-willful violation carries a maximum civil penalty of $10,000 per violation, adjusted for inflation. A willful violation rises to the greater of $100,000 (also inflation-adjusted) or 50% of the highest account balance during the year of violation.8Office of the Law Revision Counsel. 31 USC 5321 – Civil Penalties For a sizable RRSP, the willful penalty alone can exceed what’s in the account.
Form 8938 (FATCA)
Form 8938 is filed with your income tax return. For taxpayers living in the United States, the thresholds are:
- Single or married filing separately: foreign assets exceeding $50,000 on the last day of the year or $75,000 at any point during the year.
- Married filing jointly: foreign assets exceeding $100,000 on the last day of the year or $150,000 at any point during the year.
An RRSP counts toward those thresholds.9Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets The penalty for failing to file begins at $10,000 per year. FBAR and Form 8938 are not alternatives; the same account can require both.
Revenue Procedure 2014-55 did eliminate two older filings for RRSPs. Form 8891 became obsolete after December 31, 2014, and beneficiaries no longer need to file Form 3520 or Form 3520-A for their Canadian retirement plans.1Internal Revenue Service. Revenue Procedure 2014-55 FBAR and Form 8938 are not among the filings that were dropped.
Canadian Mutual Funds and the PFIC Problem
Canadian mutual funds and ETFs are almost always classified as passive foreign investment companies under U.S. tax law. Outside a retirement account, PFIC treatment is punishing: gains taxed as ordinary income at the top marginal rate, an interest charge layered on top for the portion attributed to prior years, and an annual Form 8621 filing.
Inside an RRSP, there is a meaningful federal shield. A shareholder who is a beneficiary of a foreign pension recognized under an income tax treaty does not need to file Form 8621 for PFICs held through that pension, provided the treaty taxes the fund’s income to the beneficiary only when distributed.10eCFR. 26 CFR 1.1298-1 – Section 1298(f) Annual Reporting Requirements The Canada–U.S. treaty satisfies that condition for RRSPs. The exemption covers the reporting requirement, not every underlying PFIC rule, and the position is not entirely risk-free.
For California, PFIC classification has less practical bite because the state already taxes realized gains inside the RRSP annually and reports them as ordinary state income. The real PFIC exposure is federal.
Planning Levers Worth Considering
Because California taxes the income every year regardless, the usual argument for leaving money sitting inside an RRSP loses force once you become a California resident. A few considerations are worth working through with a cross-border tax advisor:
- Withdrawal timing. Accelerating withdrawals in years when your California income is low can reduce the overall state tax burden, weighed against Canadian withholding and the federal consequences.
- Asset location. Holding lower-yield, tax-efficient investments inside the RRSP and placing higher-yield holdings in accounts California doesn’t tax annually can reduce the ongoing state tax drag.
- RRIF conversion. Converting to a RRIF and taking periodic payments can bring the Canadian withholding rate down from 25% to 15% under the treaty, which helps the federal foreign tax credit even though California still ignores it.
- Basis documentation. The most common audit problem is not the law but the inability to prove what has already been taxed. A basis tracker started the year you arrive in California is much easier than one reconstructed later.