B.1) General case (companies with a single percentage)
Box 16.Basis for payment by instalments
In box  the basis for the instalment payment shall be entered by taxpayers who, because they are taxed at a single rate of taxation in the current tax period, apply the corresponding single percentage to it.
Box  = box  - box  - box  + box  - box , but cannot be negative.
For the instalment payment for the tax year 2018 and subsequent years, this box shall be calculated as follows:
Box  = 5/7 x tax rate indicated in the tax rate box, all rounded down to the nearest whole number, provided that the entity's turnover in the 12 months preceding the date on which the tax period begins is less than EUR 10 million.
|Tax rate||Percentage applicable|
However, for taxpayers whose net turnover in the 12 months preceding the date on which the tax period begins is at least EUR 10 million, this box shall be calculated as follows:
Box  = 19/20 x tax rate indicated in the tax rate box, all rounded up.
|Tax rate||Percentage applicable|
Special case: If you tick the box "Entity applying the tonnage-based regime for shipping entities", Box  should in any case be 25.
Box 47.Provisions of art. 11.12 of the LIS (DA 7ª Ley 20/1990) (only cooperatives)
The seventh additional provision of Law 20/1990, which, among other special features for cooperatives to which Law 20/1990 is applicable, establishes that the limit referred to in Article 11.12 of the LIS (70 per cent of the positive taxable income prior to its consolidation, the application of the capitalisation reserve established in Article 25 of the LIS and the offsetting of tax losses), will refer to the positive taxable income, without taking into account its consolidation or the offsetting of negative taxable income.
In the case of cooperative societies, it will be applied after the tax rate has been applied, and the amount of the tax must be converted into a quota, depending on the corresponding tax rate.
Cooperative societies applying this limit shall make the appropriate positive or negative adjustment in this box and shall not make any adjustment to the accounting result for this reason prior to the determination of the tax base.
Box 40.Offsetting of negative quotas from previous periods (only cooperatives)
Cooperatives shall complete in this box the negative quotas to be offset from previous periods.
The offsetting of tax losses from previous periods is limited to 70 per cent of the full tax liability prior to offsetting.However, and as established in the eighth additional provision of Law 20/1990, for taxpayers whose net turnover is at least 20 million euros during the 12 months prior to the date on which the tax period begins, the limit established in Article 24.1 of Law 20/1990 will be replaced by the following:
50 per cent, if the net turnover in the 12 months in question is at least EUR 20 million but less than EUR 60 million.
25 per cent, if the net turnover in the 12 months in question is at least EUR 60 million.
In any case, full tax payments shall be offset in the tax period for the amount resulting from multiplying the average tax rate of the entity by EUR 1 million.
The limitation on the offsetting of tax losses referred to in the preceding paragraphs shall not apply to the amount of income corresponding to waivers and deferrals resulting from an agreement with creditors not related to the taxpayer if the net turnover is at least EUR 20 million during the 12 months preceding the date on which the tax period begins.
Boxes 48 and 49.Equalisation reserve (art. 105 LIS) converted into quotas (only entities under art. 101 LIS)
The equalisation reserve is a tax incentive applicable to small entities (those whose turnover in the immediately preceding tax period is less than 10 million euros) that apply the tax rate provided for in the first paragraph of article 29.1 of the LIS.In this respect, the corrections to the accounting result do not include the amount corresponding to the equalisation reserve.After the corrections to the accounting result, a preliminary taxable base is obtained, on which the offsetting of tax losses would be applied, and the taxable base is obtained, on which, if applicable, the equalisation reserve would be applied, which must be taken into account for the purposes of the instalment payments, as indicated in article 105.5 of the LIS, and which can reduce or add to that taxable base.
Thus, provided that the requirements set out in article 101 of the LIS are met and the general tax rate is applied (which will be applied by cooperative societies that are not considered to be tax sheltered), the positive tax base (provided that it does not exceed the amount of 1 million euros) may be reduced by up to 10 percent of its amount.If the tax base is reduced, a reserve must be set aside against the profit for the year for the amount of the reduction.The amount of the reduction, converted into quotas by applying the corresponding rate of taxation, should be included in box .
These amounts shall be added to the tax base of the tax periods ending in the 5 years immediately following the end of the tax period in which the reduction is made, if the taxpayer has a negative tax base and up to the amount of the same.The amount of the addition, converted into quotas by applying the appropriate rate of taxation, should be entered in box .
These boxes will be used by cooperative societies which, where applicable, meet the requirements for applying this tax incentive.
Box 18.Previous result
Enter in this box the amount resulting from applying the percentage entered in box  to the base of the instalment payment, entered in box , plus the amount in boxes  and  and minus the amount in box , as shown below:
box  = [ x (/100)] +  +  - .
In the case of cooperative societies, when calculating the amount to be entered in box , they shall also take into account the amount in box  on the offsetting of negative contributions from previous periods, which shall be as follows:
box  = [ x (/100)] +  -  = [ x (/100)] + [ - ].
Likewise, in the case of cooperative societies that are not considered to be tax sheltered, when calculating the amount to be entered in box , they shall take into account, in addition to box , the amount of boxes  and  referring to the equalisation reserve:
box  = [ x (/100)] +  -  +  -  +  -  = [ x (/100)] +  -  +  - ].