Tax rises successful the Budget person made it much hard for firms to "take a chance" connected hiring people, according to 1 of Britain's astir salient concern groups.
In a code astatine its yearly league connected Monday, the brag of the Confederation of British Industry (CBI) volition accidental the changes are undermining investment.
Rain Newton-Smith volition suggest businesses crossed galore sectors are "being deed by a pugnacious trading situation that conscionable got tougher" owed to changes successful National Insurance contributions (NICs) and inheritance tax.
The authorities said "difficult choices" had been made successful a bid to "repair the nationalist finances", but that it was determined to enactment with firms.
In her archetypal Budget arsenic chancellor past month, Rachel Reeves announced a near-£70bn summation successful nationalist spending, partially funded by increases successful taxes connected businesses.
While rises successful the minimum wage and workers' rights reforms person been praised by unions and workers' groups, bosses person deed out, saying that their businesses are being weighed down aggregate changes astatine once.
In her code to the CBI's conference, Ms Newton-Smith volition reason that "tax rises similar this indispensable ne'er again simply beryllium done to business".
She volition besides constituent to a caller survey by the group, which recovered astir two-thirds of 185 companies who responded deliberation the Budget volition harm UK investment.
Ms Newton-Smith volition besides accidental that profits "aren’t conscionable other wealth for companies to worldly successful a pillowcase, but the cardinal to investment".
"When you deed profits, you deed competitiveness, you deed investment. You hit growth," she volition say.
Last week, a radical of large retailers, including Tesco, Amazon and Next, wrote to the chancellor to pass her of the interaction taxation changes would have.
Firms specified arsenic Sainsbury's and Marks & Spencer person said they volition look a immense leap successful costs and they whitethorn request to summation prices for customers.
However, critics person said that asking multimillion lb companies to wage much successful taxes was 1 of the fairer ways to amended backing for services similar the NHS.
"No-one is questioning that we request to spot the taxation rises to truly assistance money our nationalist services," Ms Newton-Smith told the BBC's Today programme.
But she said that firms had been taken aback by the lowering of the threshold for the outgo of National Insurance, and that the symptom was "really serious".
In her code she volition impulse the authorities to see a fig of reforms to amended economical growth, specified arsenic giving companies much flexibility astir however they walk wealth utilizing the apprenticeship levy.
She volition besides accidental that the chancellor should look astatine updating concern rates for commercialized property, arsenic good arsenic simplifying the readying system.
According to reports connected Monday, the chancellor volition usage an accidental astatine the league to respond to disapproval of Labour's archetypal Budget successful 14 years.
The Guardian suggests she volition archer concern leaders that they person offered "no alternative" to her plans, and that it was indispensable to "wipe the slate clean" pursuing the General Election.
During the run period, Labour had promised that "working people" would not spot higher taxes successful their payslips.
A authorities spokesperson said that the pledge meant that it had had to instrumentality "difficult choices to repair the nationalist finances and to enactment nationalist finances connected a firmer footing".
"Despite the hard inheritance, the authorities is determined to spell for maturation and to enactment successful concern with businesses to put successful Britain's aboriginal truthful we tin marque each portion of the state amended off," they added.