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Filing Your Return   ->   Working income tax benefit -> 2008 WITB factors

Working Income Tax Benefit (WITB) Factors for 2008

The following table summarizes the WITB factors by province/territory.  Where we indicate "couple", this refers to an individual with an eligible spouse or eligible dependent.

Factor Most
Prov/Terr
BC QC NU
Basic working income tax benefit factors
Base amount of working income:
 - single person $3,000 $4,750 $2,400 $8,500
 - couple $3,000 $4,750 $3,600 $8,500
% applied to excess of working income over base amount:
 - single person 20% 17% 12% 4%
 - couple 20% 17% 8% 8%
Maximum WITB refundable amount:
 - single person $510 $800 $888 $438
 - couple $1,019 $1,422 $916 $876
Adjusted net income base amount:
 - single person $9,681 $9,681 $10,421 $20,380
 - couple $14,776 $13,247 $16,004 $25,475
% applied to net income over base amount, to reduce the WITB:
 - single person 15% 17% 20% 3.5%
 - couple 15% 17% 20% 7%
Working income at which WITB is reduced to zero (when no disability supplement):
 - single person $13,081 $14,387 $14,859 $32,894
 - couple $21,569 $21,612 $20,582 $37,989
Disability supplement factors
Base amount of working income:
 - single/couple $1,750 $2,750 $1,200 $7,500
% applied to excess of working income over base amount:
 - single/couple 20% 17% 20% 20%
Maximum WITB refundable amount for each disabled person:
 - per person $255 $346 $243 $204
Adjusted net income base amount:
 - single person $13,077 $14,386 $14,859 $32,899
 - couple $21,569 $21,609 $20,582 $37,994
% applied to net income over base amount, to reduce the WITB:
 - If you had an eligible spouse and he or she also qualifies for the disability amount, the rate used is A.  In all other situations, the rate used is B.
 A 7.5% 8.5% 10% 7.5%
 B 15% 17% 20% 15%
Net income at which WITB is reduced to zero when there is a disability supplement:
 - single person $14,777 $16,421 $16,478 $34,259
 - couple (B) $23,269 $23,644 $22,201 $39,354
 - couple, both eligible for disability amount (A) $24,969 $25,680 $23,821 $40,714

All of the (non-percentage) factors above, except for the base amount of working income, will be increased each year based on the federal indexing factor, except for Quebec, which uses a different indexation method.

Revised: December 12, 2025