Filing Requirements: US-Canada Dual Citizens
| Requirement | US Filing | Canadian Filing |
|---|---|---|
| Who must file | All US citizens worldwide | Canadian residents (worldwide income) |
| Tax return | Form 1040 | T1 General |
| Due date | April 15 (June 15 extension if abroad) | April 30 |
| Report worldwide income | Yes | Yes (if Canadian resident) |
| Foreign tax credit | Form 1116 (credit for Canadian tax paid) | T2209 (credit for US tax paid) |
| FBAR (foreign accounts) | FinCEN 114 — due April 15 | Not applicable |
| FATCA (Form 8938) | If foreign assets exceed thresholds | Not applicable |
Key Problem Areas for Dual Citizens
| Issue | Problem | Impact |
|---|---|---|
| TFSA | US does not recognize TFSA | All TFSA income taxable in US |
| RESP | US treats RESP as a foreign trust | Complex reporting (Form 3520/3520-A) |
| Canadian mutual funds (PFICs) | US treats Canadian MFs as Passive Foreign Investment Companies | Punitive tax rates (up to 50%+) |
| Sale of principal residence | Canada: fully exempt (PRE). US: $250K/$500K exclusion | Gain above US threshold taxable |
| CPP/OAS | Taxable in both countries | Foreign tax credit offsets, but timing differs |
| Canadian dividends | Canada: dividend tax credit. US: no equivalent credit | Effective double-taxation possible |
| Estate/gift tax | US has estate tax on worldwide assets (>$13.6M). Canada has deemed disposition | Potential double hit — treaty credit helps |
TFSA and RESP: What US Citizens Should Do
| Account | US Tax Treatment | Recommendation |
|---|---|---|
| TFSA | Fully taxable in US; complex reporting | Avoid using — use RRSP or taxable account instead |
| RESP | Foreign trust reporting (Form 3520) | Use cautiously — or use US 529 Plan if eligible |
| RRSP | Recognized under treaty; can defer US tax | Safe to use — elect treaty deferral (Form 8891 no longer required; automatic since 2015) |
| RRIF | Recognized under treaty | Safe to use — treaty provisions apply |
| FHSA | Not recognized by US | Avoid using — similar issue to TFSA |
FBAR and FATCA Thresholds
| Reporting | Who Must File | Threshold | Form | Penalty for Non-Filing |
|---|---|---|---|---|
| FBAR | US citizens with foreign accounts | $10,000 USD aggregate at any point in year | FinCEN 114 (online) | $10,000–$100,000+ per violation |
| FATCA (8938) | US citizens abroad | $200,000 USD (year-end) or $300,000 (any time) | Form 8938 | $10,000 per form |
| FATCA (domestic) | US citizens in US | $50,000 (year-end) or $75,000 (any time) | Form 8938 | $10,000 per form |
Accounts That Count for FBAR
| Account Type | Reportable? |
|---|---|
| Chequing/savings accounts | Yes |
| RRSP | Yes |
| TFSA | Yes |
| RESP | Yes |
| FHSA | Yes |
| Investment/brokerage accounts | Yes |
| Mutual funds held at Canadian institution | Yes |
| Life insurance with cash value | Yes |
| Jointly held accounts (full value) | Yes |
Canadian Mutual Funds: The PFIC Problem
| Investment | US Tax Treatment | Recommended Alternative |
|---|---|---|
| Canadian mutual funds | PFIC — punitive tax (excess distribution rules) | US-listed ETFs (e.g., VTI, VXUS) |
| Canadian ETFs (most) | PFIC — same issue | US-listed ETFs |
| Canadian ETFs (some US-listed underlying) | Still technically PFIC | US-listed equivalent |
| US-listed ETFs held in Canadian account | Normal US tax treatment | Best option for dual citizens |
| GICs | Normal interest income | Safe in both countries |
Foreign Tax Credit: Avoiding Double Tax
| Income Type | Pay Tax First To | Credit In Other Country | Form |
|---|---|---|---|
| Employment (earned in Canada) | Canada | US (Form 1116) | 1116 / T2209 |
| Canadian dividends | Canada | US (Form 1116) | 1116 |
| Capital gains (Canadian property) | Canada | US (Form 1116) | 1116 |
| US investment income (while in Canada) | US | Canada (T2209) | T2209 |
| CPP/OAS pension | Canada | US (Form 1116) | 1116 |
| US Social Security | US | Canada (T2209) | T2209 |
Tax Planning Tips for Dual Citizens
| Strategy | Details | Savings |
|---|---|---|
| Use RRSP (not TFSA) | Treaty-recognized; defers US tax | Avoid TFSA reporting burden |
| Invest in US-listed ETFs | Avoid PFIC rules | Potentially 30%+ tax savings |
| Maximize foreign tax credits | File Form 1116 carefully | Offsets most double tax |
| Consider streamlined filing (if behind) | IRS Streamlined Procedures for late filers | Avoid penalties |
| Hire a cross-border tax specialist | CA$2,000–$5,000/yr for dual returns | Avoid costly errors |
| Keep detailed records of ACB | Track adjusted cost base in both currencies | Accurate gain calculations |