Calculating UK tax and NI contributions

RebeccaV

New Member
Joined
Aug 18, 2013
Messages
1
Hello!

I have searched for an answer, but as yet am unable to find one. Here is my query:

I have a formula which calculates the year-end total for tax and national insurance (class 4) contributions on my spreadsheet. However, I would like to do this month by month, bearing in mind you have to reach a threshold before you begin paying tax and national insurance (class 4) contributions.

Is there a way where I can detract my expenses from my income for each month, and then calculate my tax/NI accordingly (obviously for a few months I won't pay anything) but then I would like to have an accumulative formula which recognises each month previously in that months calculation to ensure that I set aside the correct amount for tax/NI accordingly for that month.

For example, April = 406GBP (after expenses) so I won't pay tax or NI (class 4) contributions, then in May = 1,943GBP (after expenses) - still I haven't earned enough to pay Tax or NI (class 4), but I want to add the monthly payments together to then use the greater than formula, that once the threshold has been reached for Tax and NI accordingly, so I can see what I need to set aside for that month.

As mentioned previously, I have a master front sheet which shows the year-end totals, but I'd like to have a month by month analysis to see what I need to set aside for Tax and NI as I go through the year.

I hope this makes sense, and that there is a way to do this. Thank you for any help you can offer. :)

Kind regards,
RebeccaV
 

Excel Facts

Repeat Last Command
Pressing F4 adds dollar signs when editing a formula. When not editing, F4 repeats last command.
Excel Workbook
ABCDEFGHIJKL
1Bracket/ HurdleRateRate Differential
2Monthly progressive tax (sliding scale) calculated on cumulative sales.010%10%
320,00015%5%
440,00020%5%
560,00025%5%
6
7JanFebMarAprMayJunJul
8Input amounts: Net income10,000.0020,000.0030,000.0018,000.0010,000.0012,000.00
9
10Tax1,000.002,500.005,500.004,500.002,500.003,000.000.00
11
12Total100,000.0019,000.00
1ee
Excel 2003
Cell Formulas
RangeFormula
L2=K2-N(K1)
B10=SUMPRODUCT(--(SUM($B$8:B8)>rB),SUM($B$8:B8)-rB,rRate)-SUM($A$10:A10)
B12=SUM(B8:H8)
C12=SUMPRODUCT(--(B12>rB),B12-rB,rRate)
Excel Workbook
NameRefers To
rB='1ee'!$J$2:$J$5
rRate='1ee'!$L$2:$L$5
Workbook Defined Names



I do not know your tax rates or tax brackets.
Hopefully, you can adapt the above for your challenge.
 
Upvote 0
It is better to FORECAST annual earnings based on monthly figures - the forecast will get more and more accurate as the year progresses - and put aside 1/12 of the forecast NI class 4 contribution EACH MONTH, adjusting for under or over estimates
 
Upvote 0
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[TD][/TD]
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[TD]tax rates[/TD]
[TD][/TD]
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[TD]10k-15k[/TD]
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[TD]15k-25k[/TD]
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[TD]25k plus[/TD]
[TD="align: right"]25%[/TD]
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[TR]
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[/TR]
[TR]
[TD][/TD]
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[TD="colspan: 3"]earnings after expenses[/TD]
[TD][/TD]
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[TR]
[TD][/TD]
[TD][/TD]
[TD]jan[/TD]
[TD]feb[/TD]
[TD]mar[/TD]
[TD]apr[/TD]
[TD]may[/TD]
[TD]jun[/TD]
[TD]jul[/TD]
[TD]aug[/TD]
[TD]sep[/TD]
[TD]oct[/TD]
[TD]nov[/TD]
[TD]dec[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]forecast[/TD]
[TD]1800[/TD]
[TD]1900[/TD]
[TD]1900[/TD]
[TD]2300[/TD]
[TD]2700[/TD]
[TD]2400[/TD]
[TD]2400[/TD]
[TD]2200[/TD]
[TD]2300[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]cum forecast[/TD]
[TD]1800[/TD]
[TD]3700[/TD]
[TD]5600[/TD]
[TD]7900[/TD]
[TD]10600[/TD]
[TD]13000[/TD]
[TD]15400[/TD]
[TD]17600[/TD]
[TD]19900[/TD]
[TD]21900[/TD]
[TD]23900[/TD]
[TD]25900[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]actual[/TD]
[TD]1900[/TD]
[TD]1800[/TD]
[TD]2100[/TD]
[TD]2700[/TD]
[TD]2800[/TD]
[TD]2400[/TD]
[TD]2200[/TD]
[TD]2300[/TD]
[TD]2200[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]cum actual[/TD]
[TD]1900[/TD]
[TD]3700[/TD]
[TD]5800[/TD]
[TD]8500[/TD]
[TD]11300[/TD]
[TD]13700[/TD]
[TD]15900[/TD]
[TD]18200[/TD]
[TD]20400[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]end year forecast based on actuals[/TD]
[TD]22800[/TD]
[TD]22200[/TD]
[TD]23200[/TD]
[TD]25500[/TD]
[TD]27120[/TD]
[TD]27400[/TD]
[TD]27257.14[/TD]
[TD]27300[/TD]
[TD]27200[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]end year forecast based on forecasts[/TD]
[TD]21600[/TD]
[TD]22200[/TD]
[TD]22400[/TD]
[TD]23700[/TD]
[TD]25440[/TD]
[TD]26000[/TD]
[TD]26400[/TD]
[TD]26400[/TD]
[TD]26533.33[/TD]
[TD]26280[/TD]
[TD]26072.73[/TD]
[TD]25900[/TD]
[TD][/TD]
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[TR]
[TD]tax on actuals[/TD]
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[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD="align: right"]25000[/TD]
[TD]1560[/TD]
[TD]1440[/TD]
[TD]1640[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]>25000[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]125[/TD]
[TD]530[/TD]
[TD]600[/TD]
[TD]564.2857[/TD]
[TD]575[/TD]
[TD]550[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]total tax[/TD]
[TD]2060[/TD]
[TD]1940[/TD]
[TD]2140[/TD]
[TD]2625[/TD]
[TD]3030[/TD]
[TD]3100[/TD]
[TD]3064.286[/TD]
[TD]3075[/TD]
[TD]3050[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
[TR]
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[/TR]
[TR]
[TD]tax on forecasts[/TD]
[TD="align: right"]15000[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD]500[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD="align: right"]25000[/TD]
[TD]1320[/TD]
[TD]1440[/TD]
[TD]1480[/TD]
[TD]1740[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD]2000[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]>25000[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]110[/TD]
[TD]250[/TD]
[TD]350[/TD]
[TD]350[/TD]
[TD]383.3333[/TD]
[TD]320[/TD]
[TD]268.1818[/TD]
[TD]225[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]total tax[/TD]
[TD]1820[/TD]
[TD]1940[/TD]
[TD]1980[/TD]
[TD]2240[/TD]
[TD]2610[/TD]
[TD]2750[/TD]
[TD]2850[/TD]
[TD]2850[/TD]
[TD]2883.333[/TD]
[TD]2820[/TD]
[TD]2768.182[/TD]
[TD]2725[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
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[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD]variation (for-act)[/TD]
[TD]-240[/TD]
[TD]0[/TD]
[TD]-160[/TD]
[TD]-385[/TD]
[TD]-420[/TD]
[TD]-350[/TD]
[TD]-214.286[/TD]
[TD]-225[/TD]
[TD]-166.667[/TD]
[TD]2820[/TD]
[TD]2768.182[/TD]
[TD]2725[/TD]
[TD][/TD]
[/TR]
[TR]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
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[/TR]
[TR]
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[TD][/TD]
[TD][/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]
 
Upvote 0

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