diff --git a/deploy/expense_tax_amount.sql b/deploy/expense_tax_amount.sql
new file mode 100644
index 0000000..f9d34d4
--- /dev/null
+++ b/deploy/expense_tax_amount.sql
@@ -0,0 +1,24 @@
+-- Deploy numerus:expense_tax_amount to pg
+-- requires: schema_numerus
+-- requires: expense
+-- requires: expense_tax
+
+begin;
+
+set search_path to numerus, public;
+
+create or replace view expense_tax_amount
+as
+select expense_id
+     , tax_id
+     , sum(round(amount * tax_rate)::integer)::integer as amount
+from expense
+join expense_tax using (expense_id)
+group by expense_id
+       , tax_id
+;
+
+grant select on table expense_tax_amount to invoicer;
+grant select on table expense_tax_amount to admin;
+
+commit;
diff --git a/pkg/dashboard.go b/pkg/dashboard.go
index 982f888..30a2966 100644
--- a/pkg/dashboard.go
+++ b/pkg/dashboard.go
@@ -48,9 +48,9 @@ func ServeDashboard(w http.ResponseWriter, r *http.Request, _ httprouter.Params)
 		select to_price(0, decimal_digits) as sales
 		     , to_price(coalesce(invoice.total, 0), decimal_digits) as income
 		     , to_price(coalesce(expense.total, 0), decimal_digits) as expenses
-		     , to_price(coalesce(tax.vat, 0), decimal_digits) as vat
-		     , to_price(coalesce(tax.irpf, 0), decimal_digits) as irpf
-		     , to_price(coalesce(invoice.total, 0) - coalesce(expense.total, 0) - coalesce(tax.vat, 0) + coalesce(tax.irpf, 0), decimal_digits) as net_income
+		     , to_price(coalesce(invoice_tax.vat, 0) - coalesce(expense_tax.vat, 0), decimal_digits) as vat
+		     , to_price(coalesce(invoice_tax.irpf, 0) + coalesce(expense_tax.irpf, 0), decimal_digits) as irpf
+		     , to_price(coalesce(invoice.total, 0) - coalesce(expense.total, 0) - (coalesce(invoice_tax.vat, 0) - coalesce(expense_tax.vat, 0)) + coalesce(expense_tax.irpf, 0), decimal_digits) as net_income
 		from company
 		    left join (
 		        select company_id, sum(total)::integer as total
@@ -75,7 +75,18 @@ func ServeDashboard(w http.ResponseWriter, r *http.Request, _ httprouter.Params)
 		        join tax_class using (tax_class_id)
 		        where invoice_date between CURRENT_DATE - $2::interval and CURRENT_DATE - $3::interval
 		        group by invoice.company_id
-		    ) as tax using (company_id)
+		    ) as invoice_tax using (company_id)
+		    left join (
+		        select expense.company_id
+		             , sum(case when tax_class.name = 'IVA' then expense_tax_amount.amount else 0 end)::integer as vat
+		             , sum(case when tax_class.name = 'IRPF' then expense_tax_amount.amount else 0 end)::integer as irpf
+		        from expense
+		        join expense_tax_amount using (expense_id)
+		        join tax using (tax_id)
+		        join tax_class using (tax_class_id)
+		        where invoice_date between CURRENT_DATE - $2::interval and CURRENT_DATE - $3::interval
+		        group by expense.company_id
+		    ) as expense_tax using (company_id)
 		join currency using (currency_code)
 		where company_id = $1
 	`, company.Id, periodStart, periodEnd)
diff --git a/revert/expense_tax_amount.sql b/revert/expense_tax_amount.sql
new file mode 100644
index 0000000..ee279f8
--- /dev/null
+++ b/revert/expense_tax_amount.sql
@@ -0,0 +1,7 @@
+-- Revert numerus:expense_tax_amount from pg
+
+begin;
+
+drop view if exists numerus.expense_tax_amount;
+
+commit;
diff --git a/sqitch.plan b/sqitch.plan
index 359bb3c..7ac6a4b 100644
--- a/sqitch.plan
+++ b/sqitch.plan
@@ -76,3 +76,4 @@ add_expense [schema_numerus expense expense_tax tax company currency parse_price
 edit_expense [schema_numerus expense currency parse_price tax tag_name] 2023-05-04T09:53:04Z jordi fita mas <jordi@tandem.blog> # Add function to edit expenses
 expense_attachment [schema_numerus expense] 2023-05-13T19:11:21Z jordi fita mas <jordi@tandem.blog> # Add relation of expense attachments
 attach_to_expense [schema_numerus expense expense_attachment] 2023-05-15T10:18:31Z jordi fita mas <jordi@tandem.blog> # Add function to attach documents to expenses
+expense_tax_amount [schema_numerus expense expense_tax] 2023-05-18T10:15:40Z jordi fita mas <jordi@tandem.blog> # Add vier for expense tax amount
diff --git a/test/expense_tax_amount.sql b/test/expense_tax_amount.sql
new file mode 100644
index 0000000..8c715a5
--- /dev/null
+++ b/test/expense_tax_amount.sql
@@ -0,0 +1,97 @@
+-- Test expense_tax_amount
+set client_min_messages to warning;
+create extension if not exists pgtap;
+reset client_min_messages;
+
+begin;
+
+select plan(12);
+
+set search_path to numerus, auth, public;
+
+select has_view('expense_tax_amount');
+select table_privs_are('expense_tax_amount', 'guest', array[]::text[]);
+select table_privs_are('expense_tax_amount', 'invoicer', array['SELECT']);
+select table_privs_are('expense_tax_amount', 'admin', array['SELECT']);
+select table_privs_are('expense_tax_amount', 'authenticator', array[]::text[]);
+
+select has_column('expense_tax_amount', 'expense_id');
+select col_type_is('expense_tax_amount', 'expense_id', 'integer');
+
+select has_column('expense_tax_amount', 'tax_id');
+select col_type_is('expense_tax_amount', 'tax_id', 'integer');
+
+select has_column('expense_tax_amount', 'amount');
+select col_type_is('expense_tax_amount', 'amount', 'integer');
+
+
+set client_min_messages to warning;
+truncate expense_tax cascade;
+truncate expense cascade;
+truncate contact cascade;
+truncate tax cascade;
+truncate tax_class cascade;
+truncate payment_method cascade;
+truncate company cascade;
+reset client_min_messages;
+
+set constraints "company_default_payment_method_id_fkey" deferred;
+
+insert into company (company_id, business_name, vatin, trade_name, phone, email, web, address, city, province, postal_code, country_code, currency_code, default_payment_method_id)
+values (1, 'Company 1', 'XX123', '', '555-555-555', 'a@a', '', '', '', '', '', 'ES', 'EUR', 111)
+;
+
+insert into payment_method (payment_method_id, company_id, name, instructions)
+values (111, 1, 'cash', 'cash')
+;
+
+set constraints "company_default_payment_method_id_fkey" immediate;
+
+insert into tax_class (tax_class_id, company_id, name)
+values (11, 1, 'tax')
+;
+
+insert into tax (tax_id, company_id, tax_class_id, name, rate)
+values (2, 1, 11, 'IRPF -15 %', -0.15)
+     , (3, 1, 11, 'IVA 4 %', 0.04)
+     , (4, 1, 11, 'IVA 10 %', 0.10)
+     , (5, 1, 11, 'IVA 21 %', 0.21)
+;
+
+insert into contact (contact_id, company_id, business_name, vatin, trade_name, phone, email, web, address, city, province, postal_code, country_code)
+values (7, 1, 'Contact', 'XX555', '', '777-777-777', 'c@c', '', '', '', '', '', 'ES')
+;
+
+insert into expense (expense_id, company_id, invoice_number, invoice_date, contact_id, amount, currency_code)
+values ( 8, 1, 'I1', current_date, 7,    123, 'EUR')
+     , ( 9, 1, 'I2', current_date, 7,  44444, 'EUR')
+     , (10, 1, 'I3', current_date, 7,   9999, 'EUR')
+     , (11, 1, 'I4', current_date, 7, 100000, 'EUR')
+;
+
+insert into expense_tax (expense_id, tax_id, tax_rate)
+values ( 8, 2, -0.15)
+     , ( 8, 5,  0.21)
+     , ( 9, 3,  0.04)
+     , (10, 4,  0.10)
+     , (10, 5,  0.21)
+     , (10, 2, -0.07)
+;   
+
+select bag_eq(
+	$$ select expense_id, tax_id, amount from expense_tax_amount $$,
+	$$ values ( 8, 2,  -18)
+	        , ( 8, 5,   26)
+	        , ( 9, 3, 1778)
+	        , (10, 2, -700)
+	        , (10, 4, 1000)
+	        , (10, 5, 2100)
+	$$,
+	'Should compute the amount for all taxes in the expenses.'
+);
+
+select *
+from finish();
+
+rollback;
+
diff --git a/verify/expense_tax_amount.sql b/verify/expense_tax_amount.sql
new file mode 100644
index 0000000..ace3100
--- /dev/null
+++ b/verify/expense_tax_amount.sql
@@ -0,0 +1,11 @@
+-- Verify numerus:expense_tax_amount on pg
+
+begin;
+
+select expense_id
+     , tax_id
+     , amount
+from numerus.expense_tax_amount
+where false;
+
+rollback;