BIM45750 - Specific deductions: interest: examples

Example 1
Trader A takes out a loan £30,000 to acquire his main residence. Two out of the ten rooms are used exclusively for business purposes. Total interest paid amounts to £3,000.
a)Mortgage interest relief

Loan attributable to private residence = £30,000 x 8/10 = £24,000

Interest relief available = £3,000 x 24,000/30,000 = £2,400

b)Business deduction

Loan attributable to business use = £30,000 x 2/10 = £6,000

Interest relief available = £3,000 x 6,000/30,000 = £600
If the loan were in MIRAS A would have received relief on £3,000 at 15%. The business deduction would therefore be calculated as follows:
A liable at 25%
Relief due on business deduction  

£600 x 25% =

£150

less MIRAS

£600 x 15% =

£90

Additional relief due

£60

Convert additional relief to a deduction

£60 | 25%

£240

A liable at 40%

Relief due on business deduction

£600 x 40% =

£240

less MIRAS

£600 x 15% =

£90

Additional relief due

£150

Convert additional relief to a deduction

£150 | 40% =

£375

A marginally liable (say £200) at 40%

Relief due on business deduction

£200 x 40% =

£80

£400 x 25% =

£100

£180

less MIRAS

£600 x 15% =

£90

Additional relief due

£90

Convert additional relief to a deduction

£80 | 40% =

£200

£10 | 25% =

£40

£90 Relief, £240 Deductions

Example 2

Facts as above except loan of £50,000 and interest paid of £5,000.

a)

Mortgage interest relief

Loan attributable to private residence = £50,000 x 8/10 = £40,000

This exceeds the statutory limit (£30,000) for which relief is available.

Interest relief restricted to: £5,000 x £30,000/£50,000 = £3,000

b)

Business deduction

Loan attributable to business use = £50,000 x 2/10 = £10,000

Interest deduction available = £5,000 x 10,000/50,000 = £1,000

If the loan were in MIRAS the business deduction would still be £1,000 because the part of the loan attributable to the residential use is not less than the £30,000 qualifying maximum.

Example 3

Trader B takes out a loan £30,000 to acquire his main residence. Two out of the ten rooms are used solely for business purposes for periods amounting to 26 weeks in the year. Total interest paid amounts to £3,000

a)

Mortgage interest relief

Loan attributable to private residence

=£30,000 x 8/10 +
£30,000 x 2/10 x 26/52
=£27,000
Interest relief available=£3,000 x 27,000/30,000
=£2,700
b)Business deduction
Loan attributable to business use=£30,000 x 2/10 x 26/52
=£3,000
Interest relief available=£3,000 x 3,000/30,000
=£300

If the loan were in MIRAS B would have received relief on £3,000 at 15%. The business deduction would therefore be calculated as follows:

B liable at 25%

Relief due on business deduction  £300 x 25% =

£75

less MIRAS£300 x 15% =

£45

Additional relief due

£30

Convert additional relief to a deduction£30 | 25% =

£120

B liable at 40%

Relief due on business deduction£300 x 40% =

£120

less MIRAS£300 x 15% =

£45

Additional relief due

£75

Convert additional relief to a deduction£75 | 40% =£188
B marginally liable (say £200) at 40%
Relief due on business deduction£200 x 40% =

£80

£100 x 25% =

£25

£105

less MIRAS£100 | 15% =

£45

Additional relief due

£60

Convert additional relief to a deduction£60 | 40% = £150 Deduction
Example 4
Facts as in Example 3 except loan of £50,000 and interest paid of £5,000.
a)Mortgage interest relief
Loan attributable to private residence=£50,000 x 8/10 +
£50,000 x 2/10 x 26/52
=£45,000
This exceeds the statutory limit (£30,000) for which relief is available.
Interest relief restricted to:=£5,000 x 30,000/50,000
=£3,000
b)Business deduction
Loan attributable to business use=£50,000 x 2/10 x 26/52
=£5,000
Interest deduction available=£5,000 x 5,000/50,000
= £500
If the loan was in MIRAS the business deduction would still be £500 because the part of the loan attributable to the residential use is not less than the £30,000 qualifying maximum
Example 5
C takes out a loan of £40,000 to acquire her main residence. Three out of the ten rooms are let exclusively in her Schedule A business. Total interest paid amounts to £4,000.
a)Mortgage interest relief
Loan attributable to private residence=£40,000 x 7/10 +
=£28,000
Interest relief available=£4,000 x 28,000/40,000
=£2,800
b)Business deduction
Loan attributable to business use=£40,000 x 3/10
=£12,000
Interest deduction available=£4,000 x 12,000/40,000
=£1,200
If the loan was in MIRAS because the part of the loan attributable to residential use is less than the £30,000 qualifying maximum, part of the interest relating to business use will have been relieved through MIRAS:
Interest qualifying for MIRAS=£4,000 x 30,000/40,000
=£3,000
Interest attributable to private residence=£4,000 x 28,000/40,000
=£2,800
Interest attributable to business use=£200
MIRAS given=£200 x 15%
=£30
The business deduction would therefore be calculated as follows:
C liable at 25%
Relief due on business deduction
less MIRAS (see above)£1,200 x 25% =

£300

Additional relief due

£30

£270

Convert additional relief to a deduction
£270 | 25% =

£1,080

C liable at 40%
Relief due on business deduction
less MIRAS£1,200 x 40% =

£240

Additional relief due

£30

£450

Convert additional relief to a deduction

£450 | 40% =

£1,125

C marginally liable (say £200) at 40%
Relief due on business deduction
£200 x 40% =

£80

£1,000 x 25% =

£250

less MIRAS

£330

Additional relief due

£30

£300

Convert additional relief to a deduction
£80 | 40% =

£200

£220 | 25% =

£880

 

£300 relief, £1,080 deduction